if 120% of a is equal to 80% of b, then $${b+a}\over {b-a}$$ is equal to

One-third of 1206 is what percentage of 134?

A is 80% more than B and C is $$48{4\over 7}\%$$ less than the sum of A and B. By what percent is C less than A?

The price of sugar is increased by 20%. As a result, a family has to decrease its consumption by 20%. The expenditure of the family on sugar is decreased by

If x% of $${25\over 2}\%$$ is 150, then the value of x is : 

On subtracting 10 from a number, that number is decreased by 20%, then what is 60% of that number?

In a class, 60% speak Hindi and 70% speak English. If 28% of the students can’t speak any of the two languages, then what % of the students in the class can speak both the languages?

Answer the following questions

The hourly wages of a mason have increased by 25%. Since the increase, the number of hours he works daily has reduced by 16%. If he was earning Rs. 120 per day before the increase, how much (in Rs.) is he earning now?