Quantitative Aptitude - Question Set 2

In how many years will Rs 150 produce the same interest at 8% as Rs. 800 produces in 3 years at 4.5%?

• 5

• 7

• 8

• 9

A sum of money amounts to Rs 9800 after 5 years and Rs 12005 after 8 years at the same rate of simple interest. The rate of interest per annum is:

• 5%

• 8%

• 12%

• 15%

Find the simple interest on Rs 7000 at 16⅔% for 9 months.

• 735

• 765

• 830

• 875

The sum of first n natural numbers is 210. Find the value of n.

• 18

• 19

• 20

• 21

In an AP, if the 3rd term is 12 and the 7th term is 24, what is the 15th term?

• 48

• 50

• 52

• 54

Find the number of terms in the AP: 7, 13, 19, ..., 205.

• 33

• 34

• 35

• 36

Average of ten positive numbers is x. If each number is increased by 10%, then x is:

• Increased by 10

• Increased by 10%

• Increased by 100

• Increased by 100%

The average weight of 3 men A, B and C is 84 kg. Another man D joins the group and the average now becomes 80 kg. If another man E, whose weight is 3 kg more than that of D, replaces A then the average weight of B, C, D and E becomes 79 kg. The weight of A is:

• 71 kg

• 72 kg

• 73 kg

• 75 kg

The average age of 39 students and a teacher is 11 years. If the teacher's age is excluded, the average age reduces by 1. What is the age of the teacher?

• 50

• 40

• 30

• 20

Three numbers are in the ratio 3:4:5 and their LCM is 2400. Their HCF is:

• 40

• 80

• 120

• 200