.
Let x be the number of the 50-peso bills;
then the number of the 20-peso bills is (14-x), OBVIOUSLY.
Then you write the total money equations
50x + 20*(14-x) = 370 peso.
Next, you simplify and solve this basic equation
50x + 280 - 20x = 370
50x - 20x = 370 - 280
30x = 90
x = 90/30 = 3.
ANSWER. 3 50-peso bills and the rest, 14-3 = 11 20-peso bills.
CHECK. 3*50 + 11*20 = 150 + 220 = 370 peso, total. ! Correct !
The problem is just solved.
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To see millions of coin problems, solved and carefully explained, look into the lessons
- Coin problems
- More Coin problems
- Solving coin problems without using equations
- Kevin and Randy Muise have a jar containing coins
- Typical coin problems from the archive
- Three methods for solving standard (typical) coin word problems
- More complicated coin problems
- Advanced coin problems
- Solving coin problems mentally by grouping without using equations
- Non-typical coin problems
- Santa Claus helps solving coin problem
- OVERVIEW of lessons on coin word problems
in this site.
You will find there the lessons for all levels - from introductory to advanced,
and for all methods used - from one equation to two equations and even without equations.
A convenient place to quickly observe these lessons from a "bird flight height" (a top view) is the last lesson in the list.
Read them and become an expert in solution of coin problems.
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The referred lessons are the part of this online textbook under the topic "Coin problems".
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Free of charge online textbook in ALGEBRA-I
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