From a number when 15 is cracked Is reduced to 80%, then that number What will be 40%?

A number when increased by 40% becomes 42. What is the number ?

If 40% of a number is 105 more than the one-fourth of that number, then what will be the difference between the number and 35% of the number?

The sum of 1/5 of the number and 25% 0f another number is equal to 40% of the first number .What is the ratio of the first number and the second number ?

When 35 is subtracted from a number , it reduces to its 80% . What is 4/5 th of that number ?

When 40% of a number is added to 42, the result is the number itself. The number is :