Instructions

For the following questions answer them individually

Question 11

Three bottles of equal capacity are containing a mixture of milk and water in ratio 2 : 1, 3 : 7 and 4 : 11 respectively. These three bottles are emptied into a large bottle. What is the ratio of milk and water respectively in this large bottle?

Question 12

The average of 11 results is 182. If the average of first 6 results is 199 and that of the last 6 results is 161, then what will be the 6th result?

Question 13

The average of 45 results was calculated as 27 but later it was found that while calculating 39 was taken as 93 by mistake, then what will be the correct average?

Question 14

A shopkeeper professes to sell his goods at cost price but uses a 960 gm weight instead of 1 kilogram weight. What is the profit percentage of the shopkeeper?

Question 15

A person sold a book for Rs 21 and got a loss percentage which was numerically equal to the cost price. What is the cost price (in Rs) of the book?

Question 16

If length of a rectangle is increased by 10% and breadth is increased by 15%, then what will be the percentage increase in the area of rectangle?

Question 17

If the base of triangle is increased by 10% and height is decreased by 20%, then what will be the percentage change in the area of a triangle?

Question 18

A bus starts running with some initial speed and its speed increases every hour by 9 km/hr. If it takes 11 hours to cover a distance of 572 km, then what was the initial speed (in km/hr) of the bus?

Question 19

A boat goes 15 km upstream and 22 km downstream is 5 hours. It goes 20 km upstream and $$\ \frac{55}{2}\ $$km downstream in $$\ \frac{13}{2}\ $$hours. What is the speed (in km/hr) of stream ?

Question 20

If a certain sum becomes 4 times in 4 years at compound interest, then in how many years, it will become 64 times?