Problema Solution
cement is made by mixing water and gravel in the ratio 3:8 .if we make 121 gram of cement. how much gravel is needed ?
Answer provided by our tutors
let
w = grams of water used for the mix
g = grams of gravel used for the mix
cement is made by mixing water and gravel in the ratio 3:8
w:g = 3:8
8w = 3g
we make 121 gram of cement
w + g = 121
by solving the system of equations
8w = 3g
w + g = 121
we find
g = 88 grams
click here to see the step by step solution of the system of equations
88 grams of gravel is needed.