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In a game of luck, there is a 1 in 10 chance of winning $10, a 1 in 5 chance of winning $5, and a 1 in 2 chance of winning $2...
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ACT: Math Question #9 |
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Question:
| If |
x |
and |
y |
are positive numbers, |
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x |
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4 |
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- |
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3 |
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y |
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= |
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Choices:
| To solve, you need a common denominator. The common |
| To convert the first fraction, |
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x |
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4 |
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, to a denominator of |
4 |
y |
, multiply |
| the top and bottom by |
y |
, like this: |
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y |
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y |
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× |
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x |
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4 |
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= |
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| To give the second fraction a denominator of |
4 |
y |
, multiply its top |
| and bottom by 4, like this: |
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4 |
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4 |
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× |
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3 |
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y |
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= |
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| Since the denominators are now the same, you can now |
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