# Math

Jun Wei has 12 more 10 cent coins than 20 cent coins. The total value of all his coins is \$5.40. Find the total number of coins he has.

1. 👍 5
2. 👎 4
3. 👁 2,926
1. Let x = ten and y = 20 cent coins

x = y+12

.10x + .20y = 5.40

Substitute y+12 for x in the second equation and solve for y. Insert that value into the first equation to solve for x. Check by putting both values into the second equation.

1. 👍 10
2. 👎 15
2. 66

1. 👍 0
2. 👎 10
3. 40

1. 👍 9
2. 👎 5
4. More syllabus D questions

1. 👍 0
2. 👎 1
5. Not good solUtion

1. 👍 1
2. 👎 4
6. I don't know why you people supposed to give wrong answers to confuse students
Don't do this
And

1. 👍 1
2. 👎 0
7. I AM VERY SEXY

1. 👍 2
2. 👎 0

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