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Maths Puzzles Questions for Kids

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7. In a group of 28 junior high school students, 7 take French, 10 take Spanish, and 4 take both languages. The students taking both French and Spanish are not counted with the 7 taking French or the 10 taking Spanish. How many students are not taking either French or Spanish?
Ans: Seven students are not taking a language.
Sol.
Add 7 + 10 + 4 to get 21.
Then subtract 21 from the total students ⇒ 28 – 21 = 7.
 
8. In 15 year’s time the combined age of my four brothers will be 107. What will it be in the six year’s time?
Ans: 71.
Sol.
Combined age in 15 years = 107.
4 × 15 = 60,
Therefore combined age now is 107– 60 = 47.
In 6 years time, therefore, combined age will be 47 + 24(4 x 6) = 71.
 
 
9. How many cases do you need if you have to pack 112 pairs of shoes into cases that each hold 28 shoes?
Ans: 8.
Sol.
112 pairs of shoes = 224 shoes.
224 ÷ 28 = 8.