a and b can do a piece of work in 12 days, b and c can do it in 15 days while c and a can do it in 20 days in how many days will each of them finish its work alone
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1
Answer:
11
Step-by-step explanation:
No. of people = 4 (a,b,c,d)
No. of days. = 12+15+20
12
15
+ 20
= 47
ANSWER. there are 47 total days
47 ÷ 4
4 ) 47 ( 11
- 4
=0
- 4
= 3.
CHECK =. 4×11+3
4
× 11
= 44+3 = 47 thank you
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