Question 1
In a tin of biscuits, 22.4% are digestive. If the tin has 500 biscuits, How many are not digestives?
Solution:
22.4% of 500 = 22.4/100 * 500 = 112
500 – 112 = 388
Therefore, 388 biscuits are not digestives.
Question 2
The average of four numbers is 8. If three of the numbers are 4, 3, and 5. What is the fourth number?
Solution:
Let the fourth number be x.
Average= 8
(4+3+5+x)/4=8
12+x= 32
x=32-12=20
Therefore, the fourth number is 20.
Question 3
In a sale, prices have been reduced by 20%. Harry buys a wardrobe which is priced at £ 720 in the sale. What was the original price of the wardrobe?
Solution:
80% of the original price = £ 720.
80/100 * original price = £ 720.
original price = £ 720 * 100/80 = £ 900.
Therefore, the original price of the wardrobe was £ 900.
Question 4
Apple cost 12 p each. How many can Ian buy for £ 5.04?
Solution:
12 p = 12/100 = £0.12
Number of apples Lan can buy for 5.04 = 5.04/0.12 = 42
Therefore, Ian can buy 42 apples for £ 5.04.
Question 5
Ava asked some people about their favorite type of holiday.
The pictogram shows her results.
How many more people answered “Other” than “Walking”?
Solution:
Walking = 3 * 5 = 15
Other = 7 * 5 = 35
35 – 15 = 20
Therefore, 20 more people answered other than walking.
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