Instructions

For the following questions answer them individually

Question 81

Of the 3 numbers whose average is 40, the first is 1/3 rd the sum of other 2. What is the first number?

Question 82

A trader buys 500 kgs of cotton for Rs 9,000. 10% of this cotton is spoiled due to rain. At what rate (Rs/Kg) should he sell the rest to earn 10% profit?

Question 83

A student has to secure 40% marks to pass. He gets 67 and fails by 13 marks. What is the maximum marks?

Question 84

A spaceship travels at 1,260 km/h. How many metres does it travel in 1/10 th of a second?

Question 85

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 1,800, and Rs 1,926 respectively, what is the rate of interest?

Question 89

What is the sum of the first 13 terms of an arithmetic progression if the first term is -10 and last term is 26?