Question

When a number is increased by 2.5%, the result is 51. What is the original number to the nearest tenth?

Answer 1

49.8

Explanation:

Number - x

2.5% of the number is 0.025x.

New number is x+0.025x = 1.025x.

New number is 51.

1.025x = 51

x = 51/1.025≈ 49.8