A constructor estimates that 4 people can paint Mr. Karthik's house in 6 days. If he uses 5 people instead of 4, how long will they take to complete the job ?
A) 3 days
B) 26/3 days
C) 13/4 days
D) 24/5 days
Answer: D) 24/5 days
Explanation:
we know that m1 x d1 = m2 x d2 => 4 x 6 = 5 x d where d = no. of days taken by 5 men to paint d = 24/5 days.
X can complete 5/7 part of a work in 10 days and Y can complete 3/4 part of the same work in 9 days. In how many days will both complete 13/21 part of the total work?
P can make a table in 16 days while Q can make it in 20 days. Q started the work and did that work for 5 days. In how many days P can complete the remaining work?
Type 1 workers are 2.5 times as efficient as type 2 workers. Twelve Type 1 workers can complete a task in 10 days. How many days would it have taken 4 Type 1 and 15 Type 2 workers to do the same work?
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