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Let total work = 90 units (LCM of 18 and 10) Efficiency of ‘A’ = (90/18) = 5 units/day Efficiency of ‘B’ = (90/10) = 9 units/day Combined efficiency of ‘A’, ‘B’ and ‘C’ = (90/5) = 18 units/day Efficiency of ‘C’ = 18 – (5 + 9) = 4 units/day Required time taken = (90/4) = 22.5 days
There are 15 numbers such that average of first 12 numbers is 30 while the average of last five numbers is 50. Find the 12th number, if the ratio betwee...
Ram, Laxman, Bharat and Shatrughan purchase a plot for Rs. 54,00,000. The share of Laxman + Bharat + Shatrughan is 440% of Ram and the Share of Ram + B...
Coins are distributed among Anoop, Bishnu, Chinky, and Danny such that the difference between Chinky’s share and Danny’s share is equal to the diffe...
In an exam, Neha scored 10 marks less than the passing marks while Rahul scored 25 marks more than the passing marks. If the rati...
In a class, the ratio of number of boys to that of girls was 7:6 and total number of boys was 1960. When some more boys joined, the ratio became 8:7. Fi...
Three containers have their volumes in the ratio 3 : 4: 5. They are full of mixtures of milk and water. The mixtures contain milk and water in the ratio...
A starts a business with Rs. 6600. After 3 months, B joins with A as his partner. After one year the profit is divided in the ratio 4:5. What is B&r...
The incomes of A and B are in the ratio of 3:2 and their expenditures are Rs. 14,000 and Rs. 10,000 respectively. If A saves Rs. 7000, then B's savings ...
