ebarlow2004ou2mg8 ebarlow2004ou2mg8
  • 02-08-2017
  • Mathematics
contestada

Jim has three times as many comic books as Charles. Charles has 2/3 as many books as Bob. Bob has 27 books. How many comic books does Jim have?

Respuesta :

irspow
irspow irspow
  • 02-08-2017
j=3c, c=2b/3, b=27 so

j=3(2b)/3

j=2b, since b=27

j=2(27)

j=54  

So Jim has 54 comic books.

Answer Link
AwesomeMochi
AwesomeMochi AwesomeMochi
  • 02-08-2017
To solve: Work backwards.

A number is given for Bob: 27
We can make equations according to the relations between the three people to find how many books Jim has.

Bob: 27
Charles: 2/3(Bob's value)
Joe: 3(Charle's value)

Solve for Charles first: 2/3(27)= 18 books

Then solve for Joe: 3(18)=54

Answer: Joe has 54 books.
Answer Link

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