Question

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Plz explain in detail step by step
Maths ch1 SB pg 1.8 Q.16.

If x:y= 2:3; y: z=4:5 and z:w=6:7 then x : y:z:w is​

Answer 1

Step-by-step explanation:

x:y=2 :3

So 3x=2y

y=3x/2

Similarly 5y=4z

z=5y/4

=5/4 × 3x/2

=15x/8

and 7z=6w

w=7z/6

=7/6 × 15x/8

=105x/48

so x:y:z:w =x:3x/2:15x/8:105x/48

=1:3/2:15/8:105/48

=48:72:90:105

Answer 2

Answer:

X:Y:Z:W

2:3

4:5

6 :7

And,

X:Y:Z:W

2:3:3:3

4:4:5:5

6:6:6:7

Multiplied vertically each of them

Then, X : Y : Z : W

= 16:24:30:35

Ans.