(a+21)+(3a+63)+a+3a=764
8a+84=764
8a=680
a=85
The number of marbles Adam used = a+21=106
Total number of marbles Adam had at first = 85+106 = 191 marbles
Adam and Justin had a total of 764 marbles. They used some of their marbles to make a marble track each and keep the remaining marbles. Adam had 1/3 as many marbles remaining as Justin after making d their marble tracks. The number of marbles Justin used to make his marble track was 63 more more than what he had left. Justin used 3 times as many marbles is Justin to make his marble track. How many marbles did Adam have at first?
1 answer
1 answer