A and B together can complete a work in 24 days. B alone does 1/3 rd part of this work in 12 days. How many days will A alone take to complete the remaining work?

• 24

• 36

• 48

• 72

52.

The heights of a cone and a cylinder are equal. The radii of their bases are in the ratio 2 : 1. The ratio of their volume is

• 4 : 3

• 3 : 4

• 2 : 1

• 1 : 2

A shopkeeper marks his goods 50% more than the cost price and allows a discount of 25%. His profit or loss percentage is:

• 37.5%

• 25.5%

• 12.5%

• 25%

A school has 8 periods of 45 min each, every day. How long will each period be if the school has to have 9 periods everyday, assuming the working hours to be the same?

• 40 min

• 35 min

• 30 min

• 45 min

If the ratio of the cost price and the selling price of an article be 4 : 5, then the percentage of profit is 

• 

• 25%

• 15%

• 10%

In an ornament the ratio of gold and copper is 3 : 2. The percentage of gold in the ornament is

• 60%

• 40%

• 30%

• 20%

A boat moves downstream at the rate of 8 km/hr and upstream at 4 km/hr. The speed of the boat in still water is:

• 4.5 km/hr

• 5 km/hr

• 6 km/hr

• 6.4 km/hr

If  then the value of n is

• 13

• 14

• 15

• 16

If  then find the value of  is

• 3

• 2

• 1

• 0

Which one of the following combination of measurements can form the sides of a triangle?

• 9 cm,  6cm,  2cm

• 11 cm, 3 cm, 12 cm

• 3 cm,  5cm,  8cm

• 5cm,  7cm,  13cm