Q:

A) 4 days | B) 6 days |

C) 8 days | D) 10 days |

Answer: B) 6 days

Explanation:

Explanation:

Ratio of rates of working of A and B =2:1. So, ratio of times taken =1:2

Therefore, A's 1 day's work=1/9

B's 1 day's work=1/18

(A+B)'s 1 day's work= 1/9 + 1/18 = 1/6

so, A and B together can finish the work in 6 days

2
298

Q:

A) 925days | B) 965days |

C) 945days | D) 895days |

3
236

4
298

Q:

A) 8 days | B) 4 days |

C) 6 days | D) 5 days |

0
324

1
314

0
314

0
281

0
241