'A' alone can do a piece of work in 6 days and 'B' alone can do it in 12 days . In how many days will A and B together do the same work (a)2days (b) 3days (c)4days ) ( d)5days. anyone will answer I'll make him brainliest
Answers
Answered by
0
Answer:
4 days
Step-by-step explanation:
It is perhaps most intuitive to think of this in terms of units.
A and B are measurements as work per day. However, the values given are expressed in terms of days per work. So those values need to be inverted:
A = 1/6
B = 1/12
A + B = 1/6 + 1/12 = 3/12 = 1/4, or one work per four days. So the answer is “4”.
The way to check this intuitively would be via the least common multiple of the days specified for A and B, which is 12 days.
A can complete 2 pieces of work in 12 days
B can complete 1 piece of work in 12 days
A and B can together complete 3 pieces of work in 12 days
Therefore, they can complete one piece of work every 4 days.
Similar questions