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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...Asked by Jason Dhaki
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.
Answers
Answered by
PsyDAG
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.
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.
Answered by
Idiot
40
Answered by
Nope
More syllabus D questions
Answered by
ZAIN-UL-ABE-DEN
Not good solUtion
Answered by
Hania
I don't know why you people supposed to give wrong answers to confuse students
Don't do this
And
The answer is 40
Don't do this
And
The answer is 40
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