### Mathmetics

ISBT Mathmetics for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams

## Q1. | ## The LCM and HCF of two numbers are 660 and 10 respectively. If the sum of the numbers is 170, the what should be difference of the numbers ? |

1) | 30 | 2) | 40 |

3) | 48 | 4) | 50 |

5) | None of these |

**Answer : 50**

**Explanation :**Let , two numbers are 10a and 10b ,where a and b are relatively prime numbers.

According to the question,10a X b = 660

or ab = 66 ------------- (i)

Also given, 10a + 10b = 170

or a + b = 17 ------------------- (ii)

Solving Eqs. (i) and (ii) we get a = 11 and b = 6

So, numbers are 110 and 60.

Thus, the difference is 110 - 60 = 50

**View Answer**