What is the inradius of a right-angled triangle?

A. The area of the triangle is known.

B. Any two sides of the triangle are known.

C. The perimeter of the triangle is known.

2. What is a rate of interest per annum?

A. The amount becomes Rs 9331.20 in 2 years at compound interest.

B. The difference between CI and SI at the same rate of interest in 2 yrs is Rs 51.20.

C. The amount invested in Rs 8000.

Find the number of days in which Q can do a job if P can do the same job in 8 days.

A. Q is 60% more efficient than P.

B. P and Q together can do the job in $3\frac{1}{13}$ days.

C. P is $37\frac{1}{2}$%l ess efficient than Q. 

What is the non-voting population of a certain country?

A. Only males above 21 years of age can vote.

B. Males above 21 years form 30% of the total population.

C. The total population of the country is 30 million.

A shopkeeper sold an article and got Rs 300 as profit. Find the profit percentage.

A. The selling price of the article is Rs 1200.

B. He gave a 25% discount, which is Rs 400, on the labelled price.

C. Cost price of the article is Rs 900.