Time taken by A to complete the whole work = 20/0.50 = 40 days Let total work = 280 units Amount of work done by A and B together in one day = 280/35 = 8 units Amount of work done by A alone in one day = 280/40 = 7 units Amount of work done by B in one day = 8 – 7 = 1 units Desired time = 0.125 × 280/1 = 35 days
The average age of three children in a family is 35% of the average of the age of father and the eldest child. The total age of the mother and the young...
A bowl contains a colony of bacteria. Every hour, the bacteria population doubles, but immediately after doubling, a virus kills 40% of the population. ...
The only expenses of Arun are on grocery, rent and fun expenses. Arun spent Rs. 3,000 on fun, amount spent by him on rent is Rs. 9,000 more than that on...
A spent 20% of his monthly income on study and 70% of the remaining on rent. If amount spent on rent is Rs. 840, then find the amount spent on study
Find the successive discounts of 10%,20% and 40%.
Rajesh spent 45% and 20% of his monthly salary on food and rent, respectively. Of the remaining amount, he gave 16% and 25% to his mother and brother, r...
The respective ratio of monthly income of A to monthly income of B is 13:14, and A’s saving is (100/21)% more than B’s saving. Find the expenditure ...
In an assembly election, a candidate got 60% of the total valid votes. 2% of the total votes were declared invalid. If the total number of voters is 126...
The marks obtained by A is 25% more than B, and the marks obtained by C is 150 more than the difference of the marks obtained by A and B. If C obtained ...
Monthly income of P is Rs.20000 and his monthly savings is Rs.12000. If his monthly income is decreased by 40% and monthly expenditure is decreased by 3...
