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(a) 20 hours
22 HOUIS
A’ and ‘B’ can dig a canal in 30 days. They worked for 10 days and then ‘B’ left. It took 20 more

By Hailey

(a) 20 hours
22 HOUIS
A’ and ‘B’ can dig a canal in 30 days. They worked for 10 days and then ‘B’ left. It took 20 more days to
10
complete the work by ‘A’. How long will ‘A’ take to dig the canal on his own?
(a) 27 days
(b) 30 days
(c) 33 days
(d) 37 days​

About the author
Hailey

Simplify ( -2/5 power -7)*(-2/5 power 9 )÷ (- 2/5 power 2) ?​

9.
If A = {1,2,5}, В={1,2}, then
A) ACB
В) Вс А
C) A=B
D) None​

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