Answer:
a : b : c = 5/3 : 5 : 7
Explanation:
We have to find a : b : c,
a = b/3,
so, the ratio a : b = b/3 : b = 1/3 : 1
a : b = 1/3 : 1
and b : c = 5 : 7
Now, we have to make the value of b in both the ratios same,
so,
a : b = 1/3 : 1,
Multiplying by 5,
a : b = (1/3 : 1 ) * 5
a : b = 5/3 : 5
Now, comparing the ratios a : b = 5/3 : 5 and b : c = 5 : 7,
we have,
a : b : c = 5/3 : 5 : 7