Question
A alone can complete 50% of a work in 10 days while B
takes 8 days more than A to complete it. If B and C together can complete the work in 12 days, then find the time taken by C alone to complete the same work.Solution
Time taken by A alone to complete the entire work = 10/0.5 = 20 days Time taken by B alone to complete the entire work = 20 + 10 = 30 days Let the total work = L.C.M of 20, 30 and 12 = 420 units Then, efficiency of B = (420/28) = 15 units/day Combined efficiency of B and C = (420/12) = 35 units/day So, efficiency of C alone = 35 – 15 = 20 units/day So, time taken by C alone to complete the entire work = (420/20) = 21 days
Shahrukh, Salman and Aamir invested a sum of Rs. 250000 in a business. Salman invested Rs. 30000 more than Shahrukh and Aamir invested Rs. 40000 more th...
A factory produces three types of products: A, B, and C. Initially, the production ratio of A to B to C is 3:4:5. The total number of products produced ...
The ratio of three numbers is 3 : 5 : 4 and the sum of their squares is 11250. Find the sum of the numbers .
If 6A = 4B = 9C; What is A : B : C?
Shivank purchased a total of 630 kg of wheat, rice, and pulses in the ratio 3:2:4, respectively. After selling 70% of the wheat, 40% of the rice, and 40...
In a garden, the ratio of roses to tulips is 2:3. After planting 6 additional roses and 4 additional tulips, the ratio of roses to tulips changes to 3:4...
L’s income is 125 percent of M’s income and L’s expenditure is 120 percent of M’s expenditure. If L’s income is 180 percent of M’s expenditu...
Three numbers are in ratio 4:5:7. If the sum of the squares of those three numbers is 360 then find the sum of the three numbers.
- The ratio between Riya's income and expenditure is 5:3. If both income and expenditure rise by 60% and 40% respectively, find the percentage increase in he...
Ratio of present ages of mother and her son is 24:8 respectively. Father’s present age is 14 years more than that of mother. If the present average ag...
