10000 workers were employed to construct a river bridge In four years. At the end of first year, 10% workers were retrenched. At the end of the second year, 5% of the workers at that time were retrenched. However to complete the project in time, the number of workers was increased by 10% at the end of the third year. How many workers were working during the fourth year?

6400 workers were employed to construct a factory in 4 years. A the end of the first year, 25% workers were retrenched. At the end of the second year, 25% of those working at that time were again retrenched. However, to complete the project in time, the number of workers was increased by 25% of the total number of workers left at the end of third year. How many workers were working during the fourth year ?

Worker Bees are :

Worker termites are

A man borrows रु 10,000 at 5% per annum compound interest. He repays 35% of the sum borrowed at the end of the first year and 42% of the sum borrowed at the end of the second year. How much must he pay at the end of the third year in order to clear the debt?

A man saves रु 3,000 every year and invests it at the end of the year at 10% compound interest. Calculate the total amount of his savings at the end of the third year.

Ratio of the number of male and female workers in a factory is 5: 3. If there are 115 male workers, determine the number of female workers in the factory.

30 workers can dig a trench in 5 days. How many workers will be required to dig it in 6 days?

Pramod borrowed 60,000 at 12% per annum compound interest. If he pays 50% of the sum borrowed at the end of the first year and 50% of the remaining loan at the end of the second year, find the amount of loan outstanding at the beginning of the third year.

Use shortcut method to find the mean of monthly wages of a certain number of workers: Find the new mean, when: the monthly wage of each worker is increased by 30%,

Peter borrows Rs. 12,000 for 2 years at 10% p.a. compound interest. He repays Rs. 8,000 at the end of first year. Find : the amount to be paid at the end of second year, to clear the debt.