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

The population of a city increases @ 4% p.a.

The speed of a boat in still water is 20 km/hr and the rate of current is 5 km/hr.

Average monthly income of a family of 4 earning members was Rs.

The G.C.D of 1.08, 0.36 and 0.9 is

Express of the following as a fraction: 4%

A 40-liter solution of alcohol and water is 5 percent alcohol.

The rate of Interest on a sum of money is 3% p.a. for the first 3 years, 4% p.a. for the next 4 years, and 5% for the period beyond 7 years.

If 7 boys meet at a reunion and each boy shakes hands exactly once with each of the others, then what is the total number of handshakes

A freight elevator can carry a maximum load of 1150 pounds.

A is twice as good a work man as B and together they finish the work in 8 days.

In a garden, there are five blue flowers, five red flowers, five green flowers, and five pink flowers.

The greatest common factor of 16 and the positive integer n is 4, and the greatest common factor of n and 45 is 3.

JERRY has 13 ten-dollar bills, 11 five-dollar bills, and 17 one-dollar bills.

What percent of 7.2 kg is 18 gms ?

Find the number of square tiles to cover the floor of a room measuring 4 m * 9 m leaving 0.30 m space around the room.

In the graph below, no axes or origin is shown.

Sobha's father was 38 years of age when she was born while her mother was 36 years old when her brother four years younger to her was born.

Calculate the distance covered by 200 revolutions of a wheel of radius 21 cm.

Find large number from below question The difference of two numbers is 1311.

If a*b*c=65, b*c*d = 65, c*d*e=1000 and d*e*f=250 the (a*f)/(c*d) = ?

A train 500 m long can cross an electric pole in 10 sec and then find the speed of the train?

At what price must an Book costing $47.50 be marked in order that after deducting 15% from the list price.

Pipe P can fill a tank in 8 hours, pipe Q in 12 hours and pipe R in 20 hours.

If 125(5^y) = 1 then y=