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Bingel [31]
2 years ago
14

Mr. Moore drove the first half of his journey at an average speed of 96 km/h for 2 hours. He then drove the remaining half of hi

s journey at an average speed of 80 km/h. How long did Mr. Moore take for the remaining half of his journey?
Mathematics
1 answer:
kupik [55]2 years ago
7 0

<em>Answer:</em>

<em>2h 15m</em>

<em>Step-by-step explanation:</em>

<em>If he drove 96 kilometers per hour for the first two hours, then he traveled 192 kilometers in two hours, meaning that the full trip is 384 kilometers.</em>

<em>192/80 = 2.4</em>

<em>Mr. Moore took 2 hours and 15 minutes to finish his trip.</em>

<em>Hope this helps. Have a great day.</em>

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Jada, Lin, and Elena are saving money for a trip. Together they saved $120. Jada saved $20 less than Lin. Lin saved 3 times as m
defon

Step-by-step explanation:

This is a word problem that we must translate to mathematical expression before we can solve.

let the individual saving be the first letters of the names

Jada= J

Lin= L

Elena= E

1. Jada saved $20 less than Lin

    J=L-20

2. Lin saved 3 times as much money as Elena

   L= 3E

3. Hence Elena saved

   E

Together they saved $120.

hence

(L-20)+3E+E= 120

L-20+3E+E= 120

collecting like terms we hav

L+4E=120+20

L+4E= 140

but we know that L= 3E

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divide both sides by 7 we have

E= 140/7

E= $20

This means Elena saves $70

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This means that Jada saved $40

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