Question

E. What number, when reduced by 20%, becomes 500?

f. What amount increased by 100% will equal $310

g. After deducting 20% from a sum of money, the remainder is $500. What was the
original amount?



Also what is 1.40 to percent and fraction

Pls help fast

Answer 1

E: 625

F: 155

G: 625

Explanation:

Hi!

E.

A number, reduced by 20% is 500.

Originally, that number was at 100%.

Reduced = subtraction, so that number = 100%-20%, or 80%.

80% of a number = 500.

80% = .8

.8x = 500

Divide both sides by .8

x = 625

F.

A number that is increased by 100% is a number that is doubled (multiplied by 2).

2x=310

x=155

G.

Originally, the money was at 100%. After being reduced by 20%, the money is at 80% (.8).

.8x = 500

Once again, the answer is 625.

H (?)

To change a decimal to a percent, we multiply by a 100.

1.40 * 100 = 140%

As a fraction: 140/100