If M:N is 3:9 and N:P is 9:12 then M:P is equal to	Choose the most appropriate option:
A) 1:5 B) 1:4 C) 1:6 D) 1:8 E) 1:7
The two ratios given are having the same number 9 for N in both the ratios.   Hence- M:N = 3:9 N:P = 9:12   =&gt; M:P = 3:12 = &gt; 1:4   Answer 1:4
<result>B</result>
If M:N is 3:9 and N:P is 9:12 then M:P is equal to