Question
A can complete a work in 18 hours while B can complete
it in 12 hours. If C is 80% more efficient than A and B together, then find the time taken by C alone to complete the work.Solution
ATQ, Total work = LCM of (18 and 12) = 36 units
Work by A in one hour = 36 ÷ 18 = 2 units
Work by B in one hour = 36 ÷ 12 = 3 units
Work by A and B together = 2 + 3 = 5 units
C is 80% more efficient → C’s work = 5 + (80% of 5) = 5 + 4 = 9 units
Time taken by C = 36 ÷ 9 = 4 hours
In a certain language TRIANGLE is written as VTCPING. How RECTANGLE will be written
Samsung: mobile :: Action: ?
Consider the following statements :
1.     The distance from the Equator to either of the poles is one-fourth of a circle round the earth....
What is the next number 2, 9, 28, 65, __________.
If 36 persons can finish 50% of work in 12 days In how many days 72 person can finish the complete work?
The Tirathgarh waterfall is found in the state of
Global warming is believed to be due to:
If the cost of 4 pens and 6 note books is ₹ 800, then find the cost of 6 pens and 9 note books.
How many times has the constitution been amended since its inception?
Stamped red-glazed pottery, known as Arrentine Ware, has been found in many ancient settlements of the South India. The 'Arrentine Ware' were named afte...
Relevant for Exams:
