Let the total work be '60x' units. So, efficiency of 'A' = 60x ÷ 12 = '5x' units/day efficiency of 'B' = 60x ÷ 15 = '4x' units/day efficiency of 'C' = 60x ÷ 20 = '3x' units/day Work done by 'A', 'B' and 'C' together in 4 days = Work done by 'A' alone in 3 days + Work done by 'A', 'B' and 'C' together on 4th day Work done by 'A', 'B' and 'C' together in 4 days = 5x X 3 + (5x + 4x + 3x) X 1 = 15x + 12x = '27x' units So, Work done by 'A', 'B' and 'C' together in next 4 days = '27x' units Amount of work done in first 8 days = 27x X 2 = '54x' units Remaining work = 60x - 54x = '6x' units So, time taken by 'A' to complete the remaining work = 6x ÷ 5x = 1(1/5) days So, total time taken = 8 + 1(1/5) = 9(1/5) days
If x+3, x-2, 6 and 5 are in proportion then find the mean proportional to x and 9x2.
Consider two positive numbers that have a ratio of 5:7. If the combined total of their squares equals 1184, determine the sum of these two numbers.
X / Y = 7/8 and Y / Z = 8/9 find the value of (X+Y): (Y+Z): (Z+X).
If a:(b+c) =3:9 and c:(a+b) =10:14 then find the value of b:(a+c)?
Ratio of monthly income to monthly expenditure of A is 11:9, respectively and monthly savings of A is Rs. 2880. Find the monthly income of A.
A solution contains 40L of pure milk. 25% of his this is taken out. Another 25% of the remaining solution is taken out and finally 25% of the contents l...
Rs. 22000 was divided among X, Y and Z in the ratio 3:7:10. Y kept Rs. 1200 for himself, gave Rs. 800 to his father and divided the remaining money amon...
Determine the fourth proportional of 33, 28 and 132.
A bag contains coins of Rs 1, 50p, and 25p and the ratio of the number of coins is 6:12:12. If the total value of all the coins is Rs 1050 then what wil...
