Question

Find the unknown variable in the following
1)3:x =2:5
2)5:1 =3:x​

Answer 1

Answer:1 X= 15/2 OR 7.5 , 2 X= 3/5 or 0.6

Step-by-step explanation:

(1) 3/x =2/5

1/ x = 2/5×3

1/x = 2/15

x = 15/2

(2) 3/x= 5/1 or 5

x = 3/5

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Answer 2

Answer:

1:_

3÷x=2÷5

by cross multiply 3×5=2×x

=15=2x

x=15÷2

x=7.5.(answer)

Step-by-step explanation:

2 sol.=5÷1=3÷x

by cross multiply

so,5x=3×1

x=3÷5=0.6 or

if you divide 5by 3so

1.666666666