A) 51/24 | B) 87/5 |

C) 57/12 | D) 60/11 |

Explanation:

A can complete the work in 12 days working 8 hours a day

=> Number of hours A can complete the work = 12×8 = 96 hours

=> Work done by A in 1 hour = 1/96

B can complete the work in 8 days working 10 hours a day

=> Number of hours B can complete the work = 8×10 = 80 hours

=> Work done by B in 1 hour = 1/80

Work done by A and B in 1 hour = 1/96 + 1/80 = 11/480

=> A and B can complete the work in 480/11 hours

A and B works 8 hours a day.

Hence total days to complete the work with A and B working together

= (480/11)/ (8) = 60/11 days

A) 7000 | B) 21000 |

C) 14000 | D) 15000 |

A) ₹15000 | B) ₹14000 |

C) ₹21000 | D) ₹7000 |

A) 45,000 | B) 30,000 |

C) 35,000 | D) 40,000 |