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Mathematics 15 Online
OpenStudy (anonymous):

James is 30 years old and John is 3 years old. James will be five times as old as John in _ years.

OpenStudy (dbzfan836):

Hmm, 34/7 is so close

OpenStudy (dbzfan836):

it equals 4 and 6/7

OpenStudy (anonymous):

4 and 6/7 ?

OpenStudy (anonymous):

Shouldn't it be more than that?

OpenStudy (dbzfan836):

yes

OpenStudy (dbzfan836):

you will have to do decimal calculations

OpenStudy (dbzfan836):

to get your answer

OpenStudy (dbzfan836):

that is the closest you will get with integral calculation

OpenStudy (anonymous):

Can you show me step by step?

OpenStudy (dbzfan836):

we will need a math specialist for these calculations. @Luigi0210

OpenStudy (dbzfan836):

i will help you for basic integral, but i am not so good in twelthes in decimal form

OpenStudy (dbzfan836):

basically, you start at 30,3

OpenStudy (dbzfan836):

then, every year John and James go up by one

OpenStudy (dbzfan836):

so a year later, John would be 4 and James 31

OpenStudy (dbzfan836):

and then a year later 5,32

OpenStudy (dbzfan836):

so yeah the closest is 7,34

OpenStudy (anonymous):

How do you know that it is the closest?

OpenStudy (dbzfan836):

because 34/7=~4.8 . we need 5 to be the quotient, or the answer to the division.

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