Question
Statements:Some combs are boxes. All boxes are
mirrors. Conclusions:I. Some boxes are combs. II. Some mirrors are combs. In each of the questions below are given two statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of given conclusions logically follows from the given statements disregarding commonly known facts. Give answerSolution
Some combs are boxes (I) ⇒ Conversion⇒ Some boxes are combs (I). Hence conclusion I follow. Some combs are boxes(I) + All boxes are mirrors(A) ⇒ Some combs are mirrors (I) ⇒ Conversion⇒ Some mirrors are combs (I). Hence conclusion II follows. Alternate Method: 
A certain sum of money becomes 5 times of itself in 20 years at simple interest. In how many years does it become double of itself at the same rate of s...
An amount becomes 2.5 times itself in 15 years at a simple interest rate of r% per annum. Find r.
A man invested a certain amount of sum at 12.5% per annum simple interest and earned an interest of Rs.2400 after 4 years. If the same amount is investe...
An individual 'P' received Rs. 6,750 as interest by investing Rs. 15,000 at a simple interest rate of 18% per annum for 'x' month...
- A man borrowed Rs. 5,300 at an annual compound interest rate of 12%, compounded yearly. He repaid the loan in two equal yearly installments. What was the a...
On a principal of Rs. 2000, simple interest at R% per annum for 3 years is Rs. 480. Find the simple interest on Rs. 2500 at (R + 4)% per annum for 5 years.
An amount doubles itself on simple interest in 3 years. What is the percent per annum rate of interest?
A certain sum of money invested at R% p.a. fetches a compound interest (compounded annually) of 1525.5 and simple interest of Rs.1500 at the end of 2 ye...
Difference between CI and SI on a sum for 3 year at 20% p.a. is 176. Find the simple interest on the sum after 2 years at 10% p.a.
Rs. 6,000 is deposited in Scheme 'X' which provides compound interest at 8% per annum, compounded annually. Another amount of Rs. 5600 is invested in Sc...