Dominik120 Dominik120
  • 22-09-2021
  • Mathematics
contestada

If 20% of a number is 56 and 45% of the same number is 126, find 25% of that
number.

Respuesta :

richardxing2002 richardxing2002
  • 22-09-2021

Answer:

70

Step-by-step explanation:

1) "20% of a number is 56"

Lets call this number "x".

0.20x = 56 (percents can become decimals by dividing 100)

2) 45% of the same number is 126

This will be the same number "x".

0.45x = 126

3) Divide by 0.45 (you can use a calculator)

0.45x / .45 = 126 / .45

x = 280

4) "25% of that number"

that number is x

25% is one-fourth of a number so

0.25x = 280/4

0.25x = 70

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