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Katarina [22]
3 years ago
8

Mason is preparing for an endurance running competition. On Friday, he ran 15 3/5 miles. On Saturday, he ran twice as much as he

did on Friday. On Sunday, he ran 3 3/4 less than he did on Saturday. How many miles did Mason run for three days?
Mathematics
2 answers:
REY [17]3 years ago
7 0
He ran for 34 and 19/20 miles
Orlov [11]3 years ago
4 0

Answer:

74 \frac{5}{20}

Step-by-step explanation:

On Friday, he ran 15\frac{3}{5}  miles.

converting mix number to fraction we get,

15\frac{3}{5} =\frac{75+3}{5} =\frac{78}{5}


On Saturday, he ran twice as much as he did on Friday.

so, for Saturday it is,

2 x  \frac{78}{5}  miles

=\frac{78 x 2}{5}

=\frac{156}{5}


On Sunday he ran 3\frac{3}{4} less than Saturday.

3\frac{3}{4}=\frac{12+3}{4} =\frac{15}{4}

So, for Sunday it is-

\frac{156}{5} - \frac{15}{4}

=\frac{156x4-15x5}{20}

=\frac{624-75}{20}

=\frac{549}{20}


So, for three days,

total distance would be-

\frac{78}{5} + \frac{156}{5} + \frac{549}{20}

=\frac{78x4 + 156x4 + 549}{20}

=\frac{312+624+549}{20}

=\frac{1485}{20}

=74 \frac{5}{20}


So, Mason ran  74 \frac{5}{20}  miles in three days.

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