Q&Answers: Math/Chemistry/Physics Problems + Solutions

In what time will a train 100 metres long cross an electic pole, if its speed be 144 km/hr?

If the positive integer x is a multiple of 4 and the positive integer y is a multiple of 8, then xy must be a multiple of which of the following?

Look at this series: F2, __, D8, C16, B32, ...

A company wants to spend equal amounts of money for the purchase of two types of computer printers costing $375 and $150 per unit, respectively.

If an integer n is to be chosen at random from the integers 1 to 94, inclusive, what is the probability that n(n + 1)(n + 2) will be divisible by 8?

Due to construction, the speed limit along an 9-mile section of highway is reduced from 55 miles per hour to 35 miles per hour.

A salesperson receives a base salary of $1000 per month and a commission of 7.5% of the selling price of each item sold above the first 50 item.

It takes 3 tons of copper ore and 5 tons of iron ore to make one ton of alloy A.

The base of a parallelogram is twice its height.

When positive integer N is divided by positive integer J, the remainder is 18.

If 25% of x is 15 less than 12% of 1500, then x is?

The average (arithmetic mean) of 7, 8, 10 and 11 equals the average of 2, 9, 13, and

34.95 + 240.016 + 23.98 = ?

In 2008, a certain factory produced 20% more widgets than it did in 2007, and its production in 2009 was 120% of its production in 2008.

A network of 20 x 10 squares is given to you.

If John invested $ 1 at 5 percent interest compounded annually, the total value of the investment, in dollars, at the end of 4 years would be

In a group of cows and hens, the number of legs are 16 more than twice the number of heads.

Find the perimeter and area of the rectangle of length 11 cm and breadth 7 cm.

Three persons invested Rs.9000 in a joint business.

A candidate got 33% of the votes polled and he lost to his rival by 833 votes.

A car started running at a speed of 29 km/hr and the speed of the car was increased by 2 km/hr at the end of every hour.

A merchant has selected two items to be placed on sale, one of which currently sells for 30 percent less than the other.

A side of beef lost 35 percent of its weight in processing.

B alone can do piece of work in 10 days.