Quantitative Aptitude - Arithmetic Ability Questions

A group of boys has an average weight of 36 kg. One boy weighing 42 kg leaves the group and another boy weighing 30 kg joins the group. If the average now becomes 35.7 kg, then how many boys are there in the group?

Suresh goes on a trip on his motor-cycle and rides for 410 kms. If he rides for 5 hours at a speed of 50 km/hr, find at what speed he travels for the remaining 4 hours of the journey?

Two labourers A and B are paid a total of Rs 650 per day. If A is paid 160 percent of what is paid to B, how much (in Rs) is B paid?

If 2(3x + 5) > 4x -­ 5 < 3x + 2; then x can take which of the following values?

If a sum of money deposited in a bank at simple interest is doubled in 6 years, then after 12 years, the amount will be

If (X/4) = (Y/5) = (Z/9), then what is X : Y : Z?

What is the reflection of the point (5, -2) in the line y = -1?

Naveen purchased a gas cylinder and a stove for Rs.4500. He sold the gas cylinder at a gain of 25% and the stove at a loss of 20%, still gaining 4% on the whole. Find the cost of the gas cylinder.