Question

Determine if the following are in proportion.
(a) 25, 75, 80, 240
(b) 11, 121, 9, 99​

Answer 1

Step-by-step explanation:

a) 25:75::80:240

Product of mean=Product of extreme.

25*80=75*240

6000=6000

b) 11:121::9:99

Product of mean= Product of extreme.

121*9=11*99

1089=1089

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Answer 2

Step-by-step explanation:

(a)25,75,80,240

25:75::80:240

product of mean=product of extreme

75*80=25*240

6000=6000

yes this is a proportion

{b}11,121,9,99

11:121::9:99

product of mean=product of extreme

121*9=11*99

1089=1089

I hope it will be helpful