The average age of a class of 30 students and a teacher reduces by 0.5 years if we exclude the age of the teacher. If the initial average was 14 years, then find the age of the teacher.

# RRB ALP/Technician

## A shopkeeper purchases 12 balloons for Rs. 10 and sells them at 10 balloons for Rs. 12. He earns a p….

A shopkeeper purchases 12 balloons for Rs. 10 and sells them at 10 balloons for Rs. 12. He earns a profit of

## Two buses start from a house at an interval of 5 minutes and move with a speed of 10 km/hr in the….

Two buses start from a house at an interval of 5 minutes and move with a speed of 10 km/hr in the same direction. With how much speed (km/hr) should a woman coming from the opposite direction towards the house travel so as to meet the buses at an...

## Monthly salary of Harish is Rs. 12850. After deducting provident fund, he gets Rs. 11822 per month. ….

Monthly salary of Harish is Rs. 12850. After deducting provident fund, he gets Rs. 11822 per month. What is the percentage of the salary that is deducted in the form of provident fund?

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## The curved surface area of a cylinder is 264 m2 and its volume is 924 m3. The ratio of its diameter ….

The curved surface area of a cylinder is 264 m2 and its volume is 924 m3. The ratio of its diameter to its height will be

## A number consists of two digits, whose sum is 11. If 27 is added to the number, then the digits chan….

A number consists of two digits, whose sum is 11. If 27 is added to the number, then the digits change their places. What is the number?

## A number when squared increases by 506. Find the number…..

A number when squared increases by 506. Find the number.

## A can do a piece of work in 20 days, working 8 hours a day and B can do the same work in 30 days, wo….

A can do a piece of work in 20 days, working 8 hours a day and B can do the same work in 30 days, working 10 hours a day. If both A and B work together for 5 hours a day, then how many days will they take...

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