# Percentage

# If 20% of A = 50% of B, Then what per cent of A is B ?

If 20% of A = 50% of B, Then what per cent of A is B ? [A]15% [B]25% [C]30% [D]40% Show Answer 40% 20% of A = 50% of B $latex => 2A = 5B$ $latex => A = \frac{5B}{2}&s=1$ Let B is x% of A. $latex \therefore \frac{5B}{2}\times \frac{x}{100} = B&s=1$ $latex => ..

# 30% of x is 72. The value of x is :

30% of x is 72. The value of x is : [A]240 [B]216 [C]480 [D]640 Show Answer 240 30% of x is 72 $latex \therefore x = \frac{72\times 100}{30} = 240&s=1$ Hence option [A] is the correct answer.

# Half of 1 per cent, written as a decimal, is :

Half of 1 per cent, written as a decimal, is : [A]0.2 [B]0.005 [C]0.02 [D]0.05 Show Answer 0.005 $latex 1\% = \frac{1}{100}&s=1$ $latex \therefore \frac{1}{100}\times \frac{1}{2} = \frac{1}{200} = 0.005&s=1$ Hence option [B] is the correct answer.

# 65g is what per cent of 2 kg?

65g is what per cent of 2 kg? [A]$latex \frac{13}{8}&s=1$ [B]$latex \frac{65}{2}&s=1$ [C]$latex \frac{13}{4}&s=1$ [D]$latex \frac{15}{8}&s=1$ Show Answer $latex \frac{13}{4}&s=1$ Required Percentage = $latex = \frac{65}{2000}\times 100 = \frac{13}{4}&s=1$ Hence option [C] is the correct answer.

# 0.01 is what per cent of 0.1?

0.01 is what per cent of 0.1? [A]$latex \frac{1}{100}&s=1$ [B]$latex \frac{1}{10}&s=1$ [C]100 [D]10 Show Answer 10 Let $latex x\%\times 0.1 = 0.01$ $latex => \frac{x}{100}\times 0.1 = 0.01&s=1$ $latex => x = \frac{0.01\times 100}{0.1} = 10&s=1$ Hence option [D] is the correct answer.