Question
‘C’ and ‘D’ can complete a job in 20 days and 25
days respectively. They completed it together for Rs. 9,000. What will be C’s share?Solution
ATQ,
Let the total work be 100 units (LCM of 20 and 25)
Efficiency of ‘C’ = 100 / 20 = 5 units/day
Efficiency of ‘D’ = 100 / 25 = 4 units/day
So, ‘C’ would get = 9000 × (5 / (5+4)) = 9000 × (5/9) = Rs. 5,000
Alternate solution:
Ratio of efficiency = 25:20 = 5:4
C’s share = 9000 × (5/9) = Rs. 5,000
In a mixed school 25% of the scholars are infants under 7 and the number of girls above 7 is 4/5 of the number of boys above 7, and amounts to 120. Find...
In a city, the number of persons travelling by bike is 65% the number of persons travelling by metro. The number of persons travelling on foot is 80% th...
Z spends 60% of his salary and saves the remaining. After his salary is increased by 30%, he saves 55% of the increased amount besides the amount he use...
In a community of 2800 people, 55% are males and 45% of them are literate. If 35% of the total population is literate, what percentage of the women are...
Neha earns 30% more than Sneha. Neha saves 40% of her salary, while Sneha saves 10%. If the difference in their spending is Rs. 720, what are Neha’s t...
In an election between two candidates, winner got 65% of total valid votes. If total number of votes cast were 2000 out of which 6% were invalid, then f...
- 35% of ‘p’ and 55% of ‘q’ together sum up to 190. If ‘q’ is 50 greater than ‘p’, then find the value of (2p – q).
An original figure is first enhanced by 25% and then reduced by 10%. What is the final overall percentage change?
The income of P is 2/5th of the income of Q and income of R is 60% more than the income of Q. Income of Q is Rs.20000 and expenditure of P is...
Anjali’s score is 40% more than Meena’s. Priya scored 150 more than the difference between Anjali and Meena. If Priya scored 270 marks, find Anjali�...
Relevant for Exams:
