Question

2/5 of 16/18. 4/3 of 21/20

which is greater ​

Answer 1

Answer:

1. 2/5 × 16/18 = 16/45

2. 4/3 × 21/20 = 7/5

LCM of 45 and 5 is 45

16/45 × 1/1 = 16/45

and

7/5 × 9/9 = 63/45

Since,

16/45 < 63/45

2/5 of 16/18 < 4/3 of 21/20

Answer 2

Case a - 2/5 of 16/18 =
2/5 * 16/18 = 32/90

Case b - 4/3 of 21/20 =
4/3 * 21/20 = 84/60

To find which one is greater, first we need to get the LCM of both denominators (90 and 60) which is 180
Therefore, 32/90 * 2/2 = 64/180 and
84/60 * 3/3 = 252/180

64/180 < 252/180
Therefore 4/3 of 21/20 is greater.

Hope this helps.
Have a great day.