A trader sold an article at profit of 20%. Had he bought that article at 60% less price and sold it at Rs 90 less, then he would have gained 50%. What is the value (in Rs) of cost price? 

Out of the given responses one of the factors of  (a²-b²)³+(b²-c²)³+(c²-a²)³ is 

An alloy contains zinc, copper and tin in the ratio 2:3:1 and an other contains copper, tin and lead in the ratio 5:4:3. If equal weights of both alloys are melted together to form a third alloy, then the weight of lead per kg in the new alloy will be.

What approximate value will come in place of the question mark (?) in the following questions?

175 x 28 + 275 x 27.98 =? 

Direction: Study the double bar graph given below and answer the questions.

The average of the number of students participating in cultural events is:

A tap can fill a Tank in 16 hours. Due to a hole in its base it is filled in 24 hours, If tank is full then in how many hours it will be empty through the hole. 

A and B can separately complete a piece of work in 20 days and 30 days respectively. They worked together for some time then B left the work. If A completed the rest of the work in 10 days, then B worked for how many days?

120 men consume 720 kg of rice in 30 days. In how many days can 90 men consume 270 kg?