A) 8 hrs 45 min | B) 8 hrs 42 min |

C) 8 hrs | D) 8 hrs 34 min |

Explanation:

Number of pages typed by Adam in 1 hour = = 6

Number of pages typed by Smith in 1 hour = = 8

Number of pages typed by both in 1 hour = (6 + 8) = 14

Time taken by both to type 110 pages = (120 * 1/14) = 8 = 8 hrs 34 min.

A) 3 days | B) 26/3 days |

C) 13/4 days | D) 24/5 days |

Explanation:

we know that **m1 x d1 = m2 x d2**

=> 4 x 6 = 5 x d

where d = no. of days taken by 5 men to paint

d = 24/5 days.

A) 2 days | B) 3 days |

C) 4 days | D) 5 days |

Explanation:

One day work of 6 boys and 8 girls is given as 6b + 8g = 1/10 -------->(I)

One day work of 26 boys and 48 women is given as 26b + 48w = 1/2 -------->(II)

Divide both sides by 2 in (I) and then multiply both sides by 5

Now we get

15b + 20g = 1/4.

Therefore, 15 boys and 20 girls can do the same work in 4 days.

A) 145 | B) 165 |

C) 175 | D) 135 |

Explanation:

Given that

working days = 5;

working hours = 8;

A man get rupess per hour is Rs.2.40;

So in one day the man get total rupees is 2.40 x 8 = 19.2

So in 5 days week the man get total rupees is 19.2 x 5 = 96

So in 4 week the man get total rupees is 96 x 4 = 384

So the man worked for = 160hours in 4 weeks

But given that the man earned Rs.432

Hence remaning money is (432-384 = 48)which is earn by doing overtime work

Overtime hours is = 48/3.20 = 15

So total worked hours is = 15 + 160 = 175.

A) 12 days | B) 24 days |

C) 32 days | D) 16 days |

Explanation:

It is given that efficiency ratio =3:1, so time ratio will be 1:3 (since work is same)

also given that time diff = 32 days. ratio difference = 3-1 =2

2 ratio = 32 days

1 ratio = 16 days. So A will alone finish it in 16 days and B will finish it in 16*3 = 48 days.

Total work LCM of 16 and 48 = 48. Total time = Total work/Total efficiency

ie; 48/4= 12 days....

A) 15 days | B) 13 days |

C) 12 days | D) 10 days |

Explanation:

In one day work done by K = 1/20

Work done by K in 2 days = 1/10

Work done by K,L,M on 3rd day =1/20 + 1/30 + 1/60 = 1/10

Therefore, workdone in 3 days is = 1/10 + 1/10 = 1/5

1/5th of the work will be completed at the end of 3 days.

The remaining work = 1 - 1/5 = 4/5

1/5 of work is completed in 3 days

Total work wiil be done in 3 x 5 = 15 days.