Question

Find "x" in each of the following
(1) 7 : 21 =15 : x

Answer 1

Step-by-step explanation:

Hi !

Question :- Find the value of x , when 7:21 = 15 : x

Solution :- 7 : 21 = 15 : x

=> 7/21 = 15/x

By cross multiplication , we get

=> 7 × X = 21 × 15

=> 7x = 315

=> x = 315 / 7

=> x = 45

Hence,

x = 45

Answer 2

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