The average score of a class of boys and girls in examination is X. The ratio of boys and girls in the class is 4:3. If the average score of the boys (X + 2), the average score of the girls is:
Let there be 4x boys and 3x girls Total score = 4x + 3x = 7xX Total score of boys = 4x(X + 2) Total score of girls = 7xX – (4xX + 8x) = (3xX – 8x) Average score of girls = ((3xX – 8x))/3x
A sum of money lent out at simple interest amounts to Rs.620 after 2 years and to Rs.1220 after a further period of 4 years. The sum is:
Anjali invested Rs.6000 in a scheme offering compound interest of x% p.a. compounded annually. If at the end of 2 years, interest received by her from t...
Ajay invested Rs.a in SI at 7% rate of interest per annum for 10 years. Vishal invested the same amount in SI at 5% rate of interest per annum for 8 yea...
A man invested a certain amount of sum at 12.5% per annum simple interest and earned an interest of Rs.2000 after 4 years. If the same amount is investe...
Naina lent Rs. 9,800 to Mohini for 4 years and Rs. 8,800 to Mitali for 6 years on simple interest at the same rate of interest and received Rs. 11,040 i...
A bank provides a loan at the rate of 5% per annum to a trader on an amount of 12,50,000 for 5 years. The simple interest to be paid is:
Dinesh invested Rs. (P-500) at the rate of 27% per annum on simple interest and at the end of three years, he got Rs. 4860 as an interest. Pankaj invest...
The compound interest (compounded annually) on Rs 8200 for 2 years at R% p.a is Rs 1722. Had the rate of interest been (R+10)% p.a what would have been ...
If the compound interest on a certain sum of money for two years at 9% p.a. is ₹3,762, then the sum is:
A took a loan of Rs.5320 at simple interest of 20% p.a. and invested the same money in a scheme at simple interest of 30% p.a. Find the profit earned by...
