There are 120 girls and 57 boys in a school.if 5 % of the girls leave and no new pupils are admitted,what percentage[..]

Andrew is having an irrigation system installed in his yard. Company A charges $1250 plus $15 per sprinkler head.[..]

An electric supply company raises its charges by 20% and a year later increases the new charges by 20%.if the total[..]

In an examination 2500 students appeared out of which 1100 were girls.50% of the boys and 40% of the girls passed[..]

The sides of a rectangle are 20 cm and 15 cm .if each side of the rectangle is increased by 20 %,find the percentage[..]

In an election,a candidate got 65% of the total valid votes.8% of the total votes were declared invalid.if the total[..]

There are 120 girls and 57 boys in a school.if 5% of the girls leave and no new pupils are admitted,what percentage[..]

A candidate scored 25% marks in an examination and failed by 3 marks, while another candidate who scored 50% marks[..]

Chalk contains 10%calcium,3%carbon and 12%oxygen.find the amount(in grams)of each of these compounds in 1 kg of chalk.

Calculations show that an angle is 75/2 degree.the size obtained by drawing and measurement is 35 degree.find the[..]