8/9 × 15/28 × 21/25 = (8×15×21)/(9×28×25) = 2520/6300 = (2×1260)/(5×1260) = 2/5
(10/21) x (-7/25) = -70/525 = -2/15
21/25 times 550 = 462
15/25 divided by 16/25= 15/25 times 25/16= 375/400= 15/16
4/15 = 20/75 7/25 = 21/75 So, 7/25 is bigger.
Multiply it by 100 and so 15/25 times 100 = 60%
25 times 21 equals 525
Half of (21 over 25) = 1/2 * 21/25 = 21/50 = 0.42
9/25
You would need to use 15 over 25.
13/15 = 65/75 21/25 = 63/75 13/15 is bigger.
21/25