Question

1. Verify whether the following numbers are in proportion:
(a) 16, 32, 15, 30
(b) 18,54,9,36​

Answer 1

Answer:

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Step-by-step explanation:

(a) 16/32 = 15/30

16×30 = 32×15

480 = 480

thus, no.s are in proportion.

(b) 18/54 = 9/36

18×36 = 54×9

648 = 486

thus, these no.s are not in proportion.

Answer 2

$\sf \Large Solution!!$

(a)

16:32::15:30

$\sf \to \dfrac{16}{32}=\dfrac{15}{30}$

$\sf \to \dfrac{1}{2}=\dfrac{1}{2}$

1:2::1:2

Hence, it is verified that the numbers are in proportion.

(b)

18:54::9:36

$\sf \to \dfrac{18}{54}=\dfrac{9}{36}$

$\sf \to \dfrac{1}{3}≠\dfrac{1}{4}$

These numbers are not in proportion.