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Arte-miy333 [17]

3 years ago

15

Olivia is on a road trip with her family. During a three- hour stretch,they traveled 183 miles.How fast were they driving in mil

es per hour?

1 answer:

77julia77 [94]3 years ago

8 0

183/3 = 61

They drove 61mph.

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3 years ago

The difference in age between Brita and her daughter Eva is 30 years. The sum or their ages 118. How old is Eva?

Alona [7]

Answer:

Eva's age is 44 years

Step-by-step explanation:

Let

x ----> Brita's age

y ----> Eva's age

we know that

The sum or their ages 118

so

$x+y=118$ ----> equation A

The difference in age between Brita and her daughter Eva is 30 years

so

$x-y=30$ ----> equation B

Solve the system by elimination

Adds equation A and equation B

$x+y=118\\x-y=30\\---------\\x+x=118+30\\2x=148\\x=74$

<em>Find the value of y</em>

substitute the value of x in any equation

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therefore

Eva's age is 44 years

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