Question

if 20% of A=50% of B then what percent of A is B?​

Answer 1

Answer:

40%

Step-by-step explanation:

20% of A = 50% of B

=> 2A = 5B

=> A = \frac{5B}{2}

Let B is x% of A.

\therefore \frac{5B}{2}\times \frac{x}{100} = B

=> x = \frac{200}{5} = 40\%

Hence option [D] is the correct answer.

Answer 2

Answer:

40%

Step-by-step explanation:

20% of A = 50% of B

2A = 5B

A = 5B/2

Let B is x% of A.

Therefore,

$\frac{5 B}{2} \times \frac{x}{100} = B \:$

⇒

$x \: = \frac{200}{5} = \: 40\%$

Hence, the answer is 40%.

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