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A and B together can do a piece of work in 30 days. A having worked for 16 days, B finishes the remaining work alone in 44 days. In how many days shall B finish the whole work alone?
  • a)
    30 days
  • b)
    40 days
  • c)
    60 days
  • d)
    70 days
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A and B together can do a piece of work in 30 days. A having worked fo...
Let A's 1 day's work = x and B's 1 day's work = y.

Then, x + y =1/30 and 16x + 44y = 1.

Solving these two equations, we get: x = 1/60 and y = 1/60

 B's 1 day's work = 1/60.

Hence, B alone shall finish the whole work in 60 days.
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Most Upvoted Answer
A and B together can do a piece of work in 30 days. A having worked fo...
A piece of work can be done in 30days the whole work they will compleate ijn 16+44=60days
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Community Answer
A and B together can do a piece of work in 30 days. A having worked fo...
Given data:
A and B together can do a piece of work in 30 days.
A worked for 16 days and B finishes the remaining work alone in 44 days.

To find: In how many days shall B finish the whole work alone?

Solution:
Let the work be W.
Let the efficiency of A be a and that of B be b.

From the given data, we can form the following equations:
Efficiency equation: a + b = W/30
Work equation 1: 16a + (30-16)b = W
Work equation 2: 44b = W - 16a

We need to find out the value of b, i.e., the number of days B can finish the whole work alone.

Solving the above equations, we get:
a = W/30 - b
16(W/30 - b) + 14b = W
16W/30 - 16b + 14b = W
2b = W/15
b = W/30

Therefore, B can finish the whole work alone in 30 days. Hence, the correct option is (c) 60 days.

Note: It is important to understand the concept of efficiency and work equations to solve these types of problems. Also, it is recommended to cross-check the answer by substituting the obtained value of b in the given equations to ensure that it satisfies all the conditions.
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A and B together can do a piece of work in 30 days. A having worked for 16 days, B finishes the remaining work alone in 44 days. In how many days shall B finish the whole work alone?a)30 daysb)40 daysc)60 daysd)70 daysCorrect answer is option 'C'. Can you explain this answer?
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