Given that (a²+b²)=60, then find the value of (a+b)²+(a–b)².

In a factory, 60 workers can stitch 120 m of clothes in 7 days, what length of clothes can be stiched by 70 workers in 5 days?

Mukesh got series of discount 30%, 25%, 15% on his shirt. Find out the single equivalent discount.

In a mixture 25 litres, the ratio of milk and water is 4:1. How many litres of milk must be added to make the ratio 16:1?

If a=2b/3, b=2c/3, and c=2d/3, then find the ratio of b and d:

A kite is flying at a height of 50m. If the length of string is 100m then the inclination of string to the horizontal ground in degree measures is:

P can do a piece of work in 60 days & Q can do the same work in 50 days. Find the ratio of working efficiencies of P to Q.

10 persons can do a job in X days. If 20 persons with twice the efficiency can do the same job in 5 days, then find the value of X?