Question
Tarun and Saurabh together can complete a task in 10
days. Tarun and Reena together can finish the same task in 14 days. Reena and Saurabh together can complete it in 35(35/3) days. Determine the difference between the number of days Tarun alone and Saurabh alone would take to complete the task individually.Solution
ATQ,
Let the total work be 70 units (LCM of 14, 10 and 35) Efficiency of 'Tarun' and 'Saurabh' = (70/10) = 7 units/day Efficiency of 'Tarun' and 'Reena' = (70/14) = 5 units/day Efficiency of 'Reena' and 'Saurabh' = {70 ÷ (35/3) } = 6 units/day Efficiency of 'Tarun', 'Reena' and 'Saurabh' = (7 + 5 + 6) ÷ 2 = 9 units/day Efficiency of 'Tarun' = 9 - 6 = 3 units/day Efficiency of 'Saurabh' = 9 - 5 = 4 units/day Therefore, required time = (70/3) - (70/4) = (35/6) days
The ratio of the number of English books to Hindi books in a library shelf is 6:5. If 135 Hindi books are written by Pradeep, which constitutes 15% of t...
The current heights of A, B, and C are in the ratio of 10:12:15. After one year, the height of A increases by 20%, the height of B increases by 33(1/3)%...
What is the mean proportion between 4 and 9?
An integer 'p' is added to each of 7, 15, 27 and 45 so that the resulting numbers will be in proportion in given order only. Find the value of '(p + 4)'.
The ratio of two numbers is 3 : 8. If the sum of both the numbers is 220, then what is the smaller number among both the numbers?
If 50% of a certain number is equal to 3/5th of another number, what is the ratio between the numbers?
Two numbers are respectively 40% and 70% more than a third number. Find the ratio of two numbers.
The ratio of the incomes of Vineet and Vidya is 8:3 respectively. Vineet saves 30% of his income while Vidya saves 20% of his income. The sum of their e...
Mahika distributed 800 chocolates among A, B and C. A got 50% more chocolates than B and 60% less chocolates than C. How many chocolates did C receive? ...
If a/b =c/d =e/f =2/3 Then (2a2-3c2+4e2)/ (2b2-3d2+4f2) =?
Relevant for Exams:
