Question

Twice the difference of a number and 5 is 30.

Find the number.

Answer:
A. 20
B. 18.5
C. 10
D. Not here​

Answer 1

Let x be the number:

Twice the difference of a number and 5 is 30:

2(x - 5) = 30

Divide both sides by 2:

x - 5 = 15

Add 5 to both sides:

x = 20

Ans: A