Question

2.2
48. 8 students working for 5 hours a day can solve
32 problems in 9 days, while working
collectively. How many boys are needed to
solve 160 problems, if they work at 4 hours a
day for 15 days?
(a) 12
(b) 30
(c) 45
(d) 24

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Answer 1

collectively. How many boys are needed to solve 160 problems, if they work at 4 hours a day for 15 days? (a) 12 (b) 30