danashawilliamson198 danashawilliamson198

01-05-2020
Mathematics

contestada

Use the percent proportion to solve each problem 25 is 80% of what number

Respuesta :

Chelboy Chelboy

02-05-2020

Answer:31.25

Step-by-step explanation:

a is the unknown number

80% of a=25

80/100 x a=25

80a/100=25

Cross multiplying we get

80a=25 x 100

80a=2500

Divide both sides by 80

80a/80=2500/80

a=31.25

Answer Link

Otras preguntas

Balance equation for. _Mg + _H3(PO4) --_Mg3(PO4)2+ _H2

A fair dice is rolled. Work out the probability of getting a number less than 5. Give your answer in its simplest form.

3 Lizzie buys 3 clocks for a total cost of £50 at a car boot sale. She sells 2 of the clocks for £22 each and the other clock for £20 Lizzie thinks she has made

Calculate the percentage change in mass for the potato in 0.2 mol/dm3 sugar solution

choose the letter of the correct answer 1. Which one of the following is NOT an organic compound? a. Methane b. Carbon dioxide d. Lactic acid C. Oil

Someone please help thanks

The importance of the Truman doctrine (1947) for the development of the Cold War (8 marks)

Which symbol is used to identify edge-triggered flip-flops

how does high death rate affect population and development in a country

Please show steps as to how to solve this problem Thank you!