When a number is increased by 2.8%, the result is 56. What is the original number to
the nearest tenth?

The original number was 54.5.

Step-by-step explanation:

If a number is increased by 2.8%, then it is 102.8% of it's original number.

In mathematics, "of" in virtually all cases means "multiplied by".

Therefore, we do the opposite:

1. Convert to a decimal.

102.8% = 1.028

2. Divide by the decimal.

3. Round it to the nearest tenth.

54.47 rounds to 54.5.

rx and sx

step-by-step explanation: