What is the age of a class teacher?
I. There are 13 students in the class.
II. The average age of students and the teacher is 16 years.
III. The average age of the teacher and the students is 4 years more than that of the students.
By combining all the three statements, Average age of student and teacher = 16 × 14 = 224 years. Average age of 13 students = 16 – 4 = 12 years. Total age of 13 students = 13 × 12 = 156 years. ∴ Teacher’s age = 224 – 156 = 68 years.
Shivam invested 24000 at 15% p.a. simple interest for ‘x’ months. If at the end of ‘x’ months, he received a total amount of Rs.26400. What is t...
In how much time will a sum of Rs. 5250 amounts to Rs. 9870 at the rate of 11 percent per annum at simple interest?
The difference between compound interest and simple interest at rate of 24% per annum for 2 years is Rs. 288. Find the simple interest obtained on same ...
Aman invested Rs. 'a' and Rs. (a + 2100) in SIP 'P' and 'Q', respectively, in a way that the amounts received from both SIPs after 2 years are equal. If...
The difference between the interest received from two different banks on Rs. 500 for 2 years is Rs. 2.50. The difference between their rates is ?
'K' distributed his investments among two distinct funds, Mutual Fund X and Mutual Fund Y, in the respective ratio of 9:8. While Mutual Fund X generates...
Suppose a specific amount is invested in a Life insurance policy at a simple interest rate of 15% per annum for 2 years, the interest earned amounts to ...
Simple interest received at the rate of 9% p.a. for 5 years on a principal amount of Rs. 4000 is twice of the simple interest received at 10% p.a. for 6...
A man invested a certain amount of sum at 12.5% per annum simple interest and earned an interest of Rs.2500 after 2 years. If the same amount is investe...
Rs. ‘P’ was invested in scheme A at the rate of 30% per annum on compound interest for 3 years. Rs. (P+9875) was invested in scheme B at the rate of...
