The volumes of three kinds of materials are in the ratio 3:4:7 and the weights of equal volumes of?
... the three materials are in the ratio 5:2:6.if they are mixed to form a material of 65 kg then the weight of the 2nd material in the mixture is ??
... the three materials are in the ratio 5:2:6.if they are mixed to form a material of 65 kg then the weight of the 2nd material in the mixture is ????
or:... the three materials are in the ratio 5:2:6.if they are mixed to form a material of 65 kg then the weight of the 2nd material in the mixture is ????
Tags:2nd,