Hello, Jeremy,
Please convert 7 3/4 dollars to 7 dollars and some cents.
What is 3/4 of $1.00?
rishavraj (rishavraj):
\[7\frac{ 3 }{ 4 } = \frac{ 31 }{ 4 }\]
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OpenStudy (mathmale):
1/2 of $1.00 is 50 cents.
1/4 of $1.00 is 25 cents.
What is 3/4 of $1.00?
OpenStudy (alivejeremy):
3/4 of 1.000
OpenStudy (alivejeremy):
1.00*
OpenStudy (alivejeremy):
0.75
OpenStudy (alivejeremy):
\[0.75 \]
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OpenStudy (mathmale):
Good. Now re-write "7 3/4 dollars" as $7.__ ." Of course you've seen this before: 7 dollars and how many cents?
OpenStudy (alivejeremy):
7.75
OpenStudy (alivejeremy):
??
OpenStudy (alivejeremy):
So the answer would be B
OpenStudy (alivejeremy):
@Nnesha
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OpenStudy (kayders1997):
@mathmale is right, we wanted to see how much money the person spent for lunch and now were trying to see how much money this person has left so were going to subtract the two amounts to get the answer
OpenStudy (kayders1997):
@alivejeremy yes the answer is B
OpenStudy (alivejeremy):
Yeah got it right already
OpenStudy (kayders1997):
Okay
OpenStudy (mathmale):
Now you have two dollar amounts with the number of cents in each following the decimal point: $25.63 and $7.75.
Since they're expressed in the same terms, we can now readily subtract $7.75 from $25.63.
Do so. that's your answer.
I don't see any advantage in changing 7 3/4 dollars into 31/4 dollars.