Answer / khan.altaf786@gmail.com

Ratio
C:S:C
M15- 1:2:4
M20- 1:1.5:3
M25- 1:1:2

Answer / venkatraman

M15=1:2:4.
M25=1:1:2.

Answer / hassan bin mohsin

M15 = 1:2:4
M25 = 1:1:2

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