{"questions":[{"uuid":"c693dd90-74ea-417b-83aa-528ce8aa7dc9","question":"What is 25% of 80?","answer":"

20

","alternatives":["

30

","

25

","

15

"],"answerExplanation":"To find 25% of a number, multiply the number by 0.25. So, 25% of 80 is

80 \\times 0.25 = 20

.","hint":"Think about how 25% is the same as one-fourth of the number.","imageEnabled":false,"duration":30,"latexEnabled":false,"audioEnabled":false,"htmlEnabled":true,"questionId":"c693dd90-74ea-417b-83aa-528ce8aa7dc9"},{"uuid":"c6db2ac9-8c46-40ae-bc25-e7ef8fe6f533","question":"Lila had 120 marbles, and she gave 25% of them to her friend. How many marbles did she give away?","answer":"30 marbles","alternatives":["35 marbles","25 marbles","40 marbles"],"answerExplanation":"25% of 120 is equal to

0.25 \\times 120 = 30

marbles. So, she gave away 30 marbles.","hint":"To find 25% of a number, multiply the number by 0.25.","imageEnabled":false,"duration":30,"latexEnabled":false,"audioEnabled":false,"htmlEnabled":true,"questionId":"c6db2ac9-8c46-40ae-bc25-e7ef8fe6f533"},{"uuid":"b872ab3f-9861-4198-89f3-0ab4cbc80db4","question":"A jacket costs $80, and it is on sale for 20% off. What is the sale price of the jacket?","answer":"$64","alternatives":["$72","$60","$68"],"answerExplanation":"20% of $80 is

0.20 \\times 80 = 16

dollars. Subtracting this from the original price:

80 - 16 = 64

dollars. So, the sale price is $64.","hint":"Calculate 20% of 80 and subtract it from the original price.","imageEnabled":false,"duration":30,"latexEnabled":false,"audioEnabled":false,"htmlEnabled":true,"questionId":"b872ab3f-9861-4198-89f3-0ab4cbc80db4"},{"uuid":"6f00f6ef-6388-4c26-9a23-572693a25d76","question":"Maria bought a shirt for $50, and a discount of 15% was applied at checkout. How much did she save?","answer":"$7.50","alternatives":["$8.00","$6.00","$10.00"],"answerExplanation":"15% of $50 is

0.15 \\times 50 = 7.50

dollars. Therefore, she saved $7.50.","hint":"Find 15% of 50 to determine the savings.","imageEnabled":false,"duration":30,"latexEnabled":false,"audioEnabled":false,"htmlEnabled":true,"questionId":"6f00f6ef-6388-4c26-9a23-572693a25d76"},{"uuid":"498ae1e6-f2f3-41fe-8386-93afbe37e152","question":"If a bicycle originally costs $200 and there is a 10% tax added, what is the total cost of the bicycle including tax?","answer":"$220","alternatives":["$230","$240","$210"],"answerExplanation":"10% of $200 is

0.10 \\times 200 = 20

dollars. Adding this to the original price gives

200 + 20 = 220

dollars. Therefore, the total cost including tax is $220.","hint":"Calculate 10% of 200 and add it to the original price.","imageEnabled":false,"duration":30,"latexEnabled":false,"audioEnabled":false,"htmlEnabled":true,"questionId":"498ae1e6-f2f3-41fe-8386-93afbe37e152"},{"uuid":"655e23b9-66f2-492b-b5fb-8431d3052d2d","question":"Lucy scored 80% on her math test, which had a total of 50 questions. How many questions did she answer correctly?","answer":"40 questions","alternatives":["45 questions","30 questions","35 questions"],"answerExplanation":"80% of 50 is

0.80 \\times 50 = 40

questions. So, Lucy answered 40 questions correctly.","hint":"Calculate 80% of the total questions to find out how many were answered correctly.","imageEnabled":false,"duration":30,"latexEnabled":false,"audioEnabled":false,"htmlEnabled":true,"questionId":"655e23b9-66f2-492b-b5fb-8431d3052d2d"},{"uuid":"2e6f8d0b-c225-449e-b98c-6c051c3d5e6c","question":"A book originally costs $15, but it is on sale for 30% off. How much do you pay for the book after the discount?","answer":"$10.50","alternatives":["$9.00","$11.00","$12.00"],"answerExplanation":"30% of $15 is

0.30 \\times 15 = 4.50

dollars. Subtracting this from the original price gives

15 - 4.50 = 10.50

dollars. Therefore, the price after the discount is $10.50.","hint":"Calculate 30% of 15 and subtract it from the original price to find the discounted price.","imageEnabled":false,"duration":30,"latexEnabled":false,"audioEnabled":false,"htmlEnabled":true,"questionId":"2e6f8d0b-c225-449e-b98c-6c051c3d5e6c"},{"uuid":"a397ac99-b576-4d8b-add9-8f5a2e33ac80","question":"Tom's garden has 200 flowers, and 45% of them are roses. How many roses are in the garden?","answer":"90 roses","alternatives":["95 roses","100 roses","80 roses"],"answerExplanation":"45% of 200 is

0.45 \\times 200 = 90

roses. So, there are 90 roses in the garden.","hint":"Find 45% of the total number of flowers to determine how many are roses.","imageEnabled":false,"duration":30,"latexEnabled":false,"audioEnabled":false,"htmlEnabled":true,"questionId":"a397ac99-b576-4d8b-add9-8f5a2e33ac80"},{"uuid":"546561d8-574e-4f4e-8b73-247d04a23d6f","question":"Emma's recipe requires 250 grams of sugar, but she wants to reduce it by 20%. How much sugar will she use after the reduction?","answer":"200 grams","alternatives":["190 grams","210 grams","225 grams"],"answerExplanation":"20% of 250 grams is

0.20 \\times 250 = 50

grams. Subtracting this from the original amount gives

250 - 50 = 200

grams. Therefore, she will use 200 grams of sugar.","hint":"Calculate 20% of the original amount and subtract it to find the reduced amount.","imageEnabled":false,"duration":30,"latexEnabled":false,"audioEnabled":false,"htmlEnabled":true,"questionId":"546561d8-574e-4f4e-8b73-247d04a23d6f"},{"uuid":"05ab411c-9501-4768-a9a9-2afb974f59b4","question":"A restaurant bill is $120, and you want to leave a 15% tip. How much tip should you leave?","answer":"$18","alternatives":["$20","$16","$15"],"answerExplanation":"15% of $120 is

0.15 \\times 120 = 18

dollars. Therefore, you should leave an $18 tip.","hint":"Calculate 15% of the total bill to determine the tip amount.","imageEnabled":false,"duration":30,"latexEnabled":false,"audioEnabled":false,"htmlEnabled":true,"questionId":"05ab411c-9501-4768-a9a9-2afb974f59b4"}]}

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