Question

a: b=7:5, b:c= 9:11. find a a:b:c​

Answer 1

ANSWER

To find a : b : c, b is made same in both the ratios. L.C.M of 4 and 5 is 20

a:b=43=4×53×5=2015

b:c=95=9×45×4=3620

∴   a:b:c=15:20:36

Answer 2

a:b = 7:5

b:c = 9:11

Now, we have to make the value of b Same in both the ratio's, So we will multiply by 9 to make the value same.

a:b= 7x9:9x5 = 63:45

b:c = 9x5:11x5 = 45:55

Hence, now we can see the value of b is same in the Ratio's.

So,

a:b:c = 63:45:55

hope this helps u