438,512 views
15 votes
15 votes
1. If x: 5 = 12:21 find the value of x.​

User D Krueger
by
2.6k points

2 Answers

16 votes
16 votes

Answer:

x = 2.85 = 20/7

Explanation:

x : 5 = 12 : 21

=》x/5 = 12/21

Cross multiply,
21 *x = 5*12

21x = 60

x = 60/21

x = 2.85 = 20/7

________

Hope it helps ⚜

User Thejaswi R
by
3.3k points
14 votes
14 votes

Answer:


\huge\boxed{\sf x = 2.86}

Explanation:

Given proportionality:

x : 5 = 12 : 21

We know that:

Product of means = product of extremes

Means : 5,12

Extremes : x,21

5 × 12 = x × 21

60 = 21 x

Divide both sides by 21

60/21 = x

2.86 = x

x = 2.86


\rule[225]{225}{2}

User Ilinykhma
by
3.0k points
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