Instructions

What approximate value will come in place of, the question mark (?) in the following questions ? (You are not expected to calculate the exact value).

Question 40

?+ 30.01% of 651 ÷ 25.05% of 59.98 = 135

Solution

Let the missing number be y

Approximately

30.01 ~ 30

650 ~ 1

25.05 ~ 25

59.98 ~ 60

So, (y+ 30.01% of 651 ÷ 25.05% of 59.98 = 135) the equation becomes equivalent to (y+ 30% of 650 ÷ 25% of 60 = 135)

Now , using BODMAS rule

y + 195 ÷ 15 = 135

y + 13 = 135

y = 122

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