Vincent had some coins. 36% of his coins were made up of 10-cent coins which was equal to the number of $1 coins. The rest of the coins were made up of 5-cent coins. Given that Vincent had $11 more 10-cent coins than 5-cent coins, how many coins did Vincent have altogether?
| |
5-cent |
10-cent |
$1 |
Total |
| Number |
7 u |
9 u |
9 u |
25 u |
| Value |
5 |
10 |
100 |
|
| Total value |
35 u |
90 u |
900 u |
|
36% =
36100 =
925The number of 10-cent coins and $1 coins is the same.
Number of 5-cent coins
= 25 u - 9 u - 9 u
= 7 u
$1 = 100¢
$11 x 100 = 11 x 100 = 1100¢
Number of more 10-cent coins than 5-cent coins
= 90 u - 35 u
= 55 u
55 u = 1100
1 u = 1100 ÷ 55 = 20
Total number of coins that Vincent had
= 7 u + 9 u + 9 u
= 25 u
= 25 x 20
= 500
Answer(s): 500
