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torioricker
28.12.2020 •
Mathematics
.A and B together can do a piece of work in 6,2 upon 3 days, but B alone can do it in 10 days. How long will a take to do it alone
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Ответ:
20 days
Step-by-step explanation:
Giveb that :
Days taken by A and B = 6 2/3 days
Days taken by B alone = 10 days
Number of days taken by A alone =?
Rate of B working Alone = 1/10
Let rate of A working alone = 1/x
1/10 + 1/x = rate working together
Rate working together = (1 ÷ 20/3)) = 3/20
Hence,
1/10 + 1/x = 3/20
1/x = 3/20 - 1/10
1/x = (3 - 2) / 20
1/x = 1 / 20
x = 20
x = 20
Hence, it will take A 20 days
Ответ:
sure :)
Step-by-step explanation: