Sunayana got 15 out of 20 full marks abd Bishwant got 35 out of 50 full marks. Express their marks as the fractions of the full marks and identify who has better performance.
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Sunayana got 15 out of 20
Fraction is 15 / 20
Bishwant got 35 out of 50
Fraction is 35 / 50
Now who is better ?
15 / 20 and 35 / 50 ????????????
Take L.C.M of 20 and 50 :
20 = 2 × 10
50 = 5 × 10
L.C.M = 2 × 5 × 10
= 10 × 10
= 100
15 / 20 can be written as : 15 × 5 / 20 × 5
= 75 / 100
35 / 50 can be written as : 35 × 2 / 20 × 2
= 70 / 100
Now we can say that : 75 / 100 > 70 / 100
Hence : 15 / 20 > 35 / 50
ANSWER :
Sunayana showed better performance
Hope it helps :-)
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