Charlie and Penelope share some marbles.
45 of Charlie's marbles is equal to
47 of Penelope's marbles. Given that Penelope has 18 marbles more than Charlie, how many marbles do they have altogether?
45 of Charlie's marbles = 47 of Penelope's marbles
Number of Charlie's marbles = 5 u
Number of Penelope's marbles = 7 u
Number of marbles that Penelope has more than Charlie
= 7 u - 5 u
= 2 u
2 u = 18
1 u = 18 ÷ 2 = 9
Total number of marbles
= 5 u + 7 u
= 12 u
= 12 x 9
= 108
Answer(s): 108
