Question

In a mixture of​ concrete, there are fourfour lb of cement mix for each pound of gravel. if the mixture contains a total of 110110 lb of these two​ ingredients, how many pounds of gravel are​ there?

Answer 1

For every 4lb of cement there is 1lb of gravel so, the ratio is 4:1
then take the gravel fraction as 1/5 ×110110= 22022lb of gravel for every 88088 of cement