Question

two numbers are respectively 20 percent aand 50 percent of a third number what percentage is the first to the second​

Answer 1

Answer:

First No. = 40% of Second No.

Step-by-step explanation:

Let the third no. be X

Therefore

First No. = 20X/100 = X/5 ...Eq1

Second No. = 50X/100 = X/2 ...Eq2

Dividing Eq2 from Eq1

$\frac{first \: no.}{second \: no.} = \frac{x}{5} \div \frac{x}{2}$

$\frac{first \: no.}{second \: no.} = \frac{x}{5} \times \frac{2}{x}$

$\frac{first \: no.}{second \: no.} = \frac{2}{5}$

To Calculate the percentage we have to multiply it by 100

$\frac{first \: no.}{second \: no.} = \frac{2}{5} \times 100 = 40\%$

Therefore

First No. = 40% of Second No.