LCM/HCF Actual Question in JET 2023

Q. A fruit seller has oranges, apples and guavas in the ratio 2:5:8. The number of apples is more than the number of oranges by a number that is a multiple of both 6 and 8. What is the minimum number of fruits in his shop?

  1. 100
  2. 120
  3. 160
  4. 140
EXPLANATION

O:A:G=2:5:8

LCM of 6&8 is 24

A-O=24x

5y-2y=24x

3y=24x

y=8x

To be the smallest number, x should be 1

So y=8

O:A:G=16:40:64

And just to double check above number satisfies given question

Sum = 15*8=120

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