A student multiplied a number by 4/5 instead of 5/4. What is the percentage error in the calculation?
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If 25% of (A + B) = 80% of (A – B), A is what percentage of B?
30 liters of water is added to a 120 liters mixture containing 40% of alcohol. What is the percentage concentration of alcohol in the resultant mixture?
If 25% of A is added to 50% of B, the resultant will be 90% of B. What percentage of A is B?
If 18% of x is the same as 13.50% of y, 50% of x is the same as:
In a school 30% of the students play football and 50% of students play cricket. If 40% of the students play neither football nor cricket, what percentage of total students play both the games?
If x% of ‘a’ is the same as y% of ‘b’, a variable ‘z’ can be written as:
In 2020, 37.50% of the total employees of a company paid income tax. If 450 employees of the company did not pay tax, what is the total number of employees in the company?
In a big garden 40% of the trees are mango trees. The number of mango trees is 80% of the number of guava trees. The rest of the trees are Jambolan trees. If the number of Jambolan trees is 40, what is the total number of trees in the garden?
What is to be added to 40% of 900 so that the sum must be equal to 30% of 2600?
A box contains 90 blue balls, 110 red balls, 150 black balls and 50 pink balls. 50% of blue balls and 70% of red balls are taken away. What percentage of the initial number of balls are remaining in the box?
If 70% of a number added to 90 gives the result as the number itself. What is the number?
314 videos170 docs185 tests

314 videos170 docs185 tests
