Riordan and Jen share some marbles.
25 of Riordan's marbles is equal to
27 of Jen's marbles. Given that Riordan has 12 marbles less than Jen, how many marbles do they have altogether?
25 of Riordan's marbles = 27 of Jen's marbles
Number of Riordan's marbles = 5 u
Number of Jen's marbles = 7 u
Number of marbles that Riordan has less than Jen
= 7 u - 5 u
= 2 u
2 u = 12
1 u = 12 ÷ 2 = 6
Total number of marbles
= 5 u + 7 u
= 12 u
= 12 x 6
= 72
Answer(s): 72
