mildred , asked a question
, asked on 1/6/13

LCM of two numbers is 28 times their HCF. The sum of HCF and LCM is 1740. If one of these numbers is 240, the sum of digits of the other number is -

A) 2

B) 5

C) 6

D) 8

Certified by MeritNation Expert

CERTIFIED ANSWER

Abhinav Verma , added an answer, on 18/6/13
31 helpful votes in

 LCM = 28 HCF

HCF + LCM = 1740

HCF + 28HCF = 1740

29HCF = 1740

HCF = 60

LCM = 1680

HCF * LCM = Product of numbers

60 * 1680 = 240 * x

x = 60 * 1680 / 240

x = 1680 / 4 = 420

Sum of digits =  4  + 2 + 0 = 6

Ans: C) 6

This conversation is already closed by Expert

  • Was this answer helpful?
  • 2
100% users found this answer helpful.
View Full Answer

What are you looking for?

Syllabus