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Let total amount of work be 24 units (LCM of 12 and 24). Efficiency of ‘A’ = 24/12 = 2 units/day Efficiency of ‘B’ = 24/24 = 1 units/day Amount of work done by ‘A’ and ‘B’ together in 4 days = (2 + 1) × 4 = 12 units Time taken by B to complete remaining work = {(24 – 12)/1} = 12 days
In an office, the ratio of the number of males to number of females is 9:4. If 2 males joined the class and 8 females left the class, then the ratio of ...
If A:B = 3:4 and B:C = 5:7, then find the value of A:B:C.
A sum is distributed among A, B and C is the ratio 8: 4: 3 and A divides its part between D and E in the ratio 9: 7, then what is the ratio of part of C...
The ages of A, B and C are in the ratio of 4:2:7 respectively. If the sum of their ages is 52 years, then find the age of B.
Rs. 7,20,000 is divided among 132 men and women. The ratio of total amount received by men and women is 5 : 4. But the ratio of money received by each m...
Some amount was divided among A, B and C in the ratio 3:5:8. If the share of A is 40 less than share of C, then find the 1/4th of total amount (in Rs).
If x+3, x-2, 6 and 5 are in proportion then find the mean proportional to x and 9x2.
P, Q and R together started a business. Three times the investment of P equals five times the investment of Q and the capital of Q is twice that of R. F...
The ratio of zinc and copper in a brass pieces is 3:4. How much zinc will be there in 140 kg of such a piece?
Ratio of monthly income to monthly expenditure of A is 15:7, respectively and monthly savings of A is Rs. 2880. Find the monthly income of A.