Question

[Hoàng Mai Xuân]

1. A machine P can print one lakh books in 8 hours, machine Q can print the same number ò books in 10 hours while machine R can print them in 12 hours. All the machines are started at 9 A.M. While machine P is closed at 11 A.M . And the remaining two machines complete work (to print one lakh books) be finish?

2.A can lay railway track between two given stations in 16 days and B can do the same job in 12 days. With help of C, they did the job in 4 days. Then, C alone can do the job in

Answer 1

[Hollow Ichigo 3]

ĐỀ LÀ THẾ ĐÓ HẢ

Answer 2

[Hollow Ichigo 3]

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