A bus can cover a distance of 420 km in 7 hours. How much will the speed have to be increased to cover this distance in 6 hours?

The ratio of the speeds of the two airplanes is 11: 18. If the first airplane covers a distance of 1650 km in 3 hours, then what is the speed (m / s) of the second airplane?

If a : b=2 : 5, b:c=4 : 7 and c : d=9 : 14, then Find out the value of a : b : c : d=?

One number is 50% less than X and another number is 20 percent less than X. What is the ratio of both the numbers?

If the compound interest rate is 20% per annum compounded half yearly, then what will be the interest for two years on the principal of Rs. 100000?

What will be the area (cm²) of the curved surface of an elliptical cylinder whose height and diameter are 10 cm and 8 cm respectively?

7 × 7 of 3 ÷ 3 -14 × P=7, then find out the value of P?

Statement: 

Should family planning be made compulsory in India? 

Arguments: 

I. Yes, looking to the miser able conditions in India there is no other go. 

II. No, in India there are people of various religions and family planning is against the tenet of some of the religions.