Some amount out of Rs.7000 was lent at 6% per annum and the remaining at 4% per annum. If the total simple interest from both the fractions in 5 year was Rs.1600, find the sum lent at 6% per annum.

The printed price of a book is 320. A retailer pays 244.80 for it. He gets successive discounts of 10% and an another rate. His second rate is-

With a 5 % discount on the cost of sugar, a buyer could purchase 2 kg. more sugar for ₹ 608. Original selling price of sugar is. 

Directions:Study the following table carefully to answer these questions:

Percentage of Marks obtained by six students in six subjects

What are the total marks obtained by ‘B’ in all the subjects together ?

Find the average of the following sets of numbers.

693, 456, 876, 532, 934, 691, 596, 398, 682

What are the roots of the quadratic equations?

  $$(x^2 + 3x - 154 = 0)$$

Suresh is half his father’s age. After 20 years, his father’s age will be one and a half times Suresh’s age. What is his father’s age now?

What is the effective discount for every 4 consecutive discounts of 20%?