Question

Mark and Don are planning to sell each of their marble collections at a garage sale. If Don has 1 more than 4 times the number of marbles Mark has, how many does each boy have to sell if the total number of marbles is 81?

Answer 1

Marbles of Mark 16

Marbles of Don = 65

Step-by-step explanation:

Let the marbles of Mark be x

Then the marbles of Don will be 4x+1

Solution:

x + (4x+1) = 81

x+4x+1 = 81

5x +1 = 81

5x = 81-1

5x = 80

x = 80/5

x= 16

Marbles of Mark = x = 16

Marbles of Don = 4x + 1 = 4(16) + 1 = 65