Question

think of a number,add 7 and multiply by 3 the answer is 90 what is number ?

Answer 1

let the no. be x
acc. to the question
(x+7)3=90
3x+21=90
3x=90-21
3x=69
x=69/3
x=23
Hence, the required no. is 23

Answer 2

The correct answer is 23.

Given: Add 7 to a number and multiply by 3 the answer is 90.

To Find: The number.

Solution:

Let the number = x.

According to the statement. Add 7 to x and then multiply the whole by 3.

3(x + 7) = 90

x + 7 = 30

x = 23

Hence, the number is 23.

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