Hello,
let's assume j the john's age, m the mary's age.
<span>"John is twice as old as mary"==>j=2*m
</span>
<span>"the sum of their ages is 21" ==>j+m=21
==>2*m+m=21
==>3m=21
==>m=7
and j=21-7=14
</span>
Answer:
jonathan
Step-by-step explanation:
if for example jonathan spends 5 hours of homework or reading he'll get 3 hours of gaming. if lucas spends the same amount of time on homework or reading he'll only get 2 and a half hours playing.
Hello there!
<u><em>Answer: ⇒⇒=1975</em></u>
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Step-by-step explanation:
First you had to multiply by the number.

1975 is the right answer.
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Hope this helps!
Thank you for posting your question at here on brainly.
Have a great day!
-Charlie
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Answer:
8
Step-by-step explanation:
We know that in 5 days they have travelled 2045 miles. This means that their per day average for travel is 2045/5=409 miles per day.
Now the distance left is 3272-2045=1227 miles.
And if we divide the average miles with the miles left, it gives us= 1227/409
=3
So, the total time taken for travel will be= 5+3=8 days
I guess this is the way to do it.