Question
Pawan completes 40% of a task in 6 days. His efficiency
is 100% greater than Qureshi's. How many days will it take for both Pawan and Qureshi, working together, to finish the entire task?Solution
ATQ,
Pawanâ alone can do the complete work in (6/0.4) = 15 days
Efficiency of âPawanâ = 2 Ă efficiency of âQureshiâ
As, we know efficiency is inversely proportional to time taken when work done is constant.
So, âQureshiâ alone can complete the work = (15 Ă 2) = 30 days
Let the total work be 30 units {LCM of 15 and 30}
Efficiency of âPawanâ = (30/15) = 2 units/day
Efficiency of âQureshiâ = (30/30) = 1 unit/day
So, time taken by âPawanâ and âQureshiâ to complete the work together = (30/3) = 10 days
Find the value of 24 -Â 3Â
Which of the following matrices is both symmetric and skew-symmetric?
What will be come in place of (?) in the given number series.
5, 9, 17, 33, ?, 129In the each question, the given two series following the same pattern, then find the pattern used in the 1st series and use the pattern to find the unk...
A person 'P' invested a total amount of Rs. 1800 in two SIPs, A and B, maintaining a ratio of 3:2. SIP A provides simple interest at a rate of 10% per a...
If p = (19² â 18) +11² + 6, which of the following statements is correct?
A). 3p will always be divisible by 6.
B). 3p+5 will always b...
Let A = {10, 20, 30} and B = {5, 10, 15}. Which of the following relations from A to B is onto?
Let a plane pass through the point (1, â1, 2) and is perpendicular to the vector 2i + j â 2k. Then its Cartesian equation is:
? = 49.99² á (1.98⾠+ 8.01 à 89.91) + 75.15% of (263.89 à 49.11)
Relevant for Exams:
