jamieleeann
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- Nov 1, 2005
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The sum of two numbers is 42. One number plus two times the other number is 57. What are the numbers? The answers are 15 and 27 but I dont know how to get there. Help?
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word problem
- Thread starter jamieleeann
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Let the 2 numbers be a and b
then
a + b =42
and
a + (2b) =57
Rearrange the first equation to
a= 42 -b
now place this into the second equation so you have just one variable and solve.
then
a + b =42
and
a + (2b) =57
Rearrange the first equation to
a= 42 -b
now place this into the second equation so you have just one variable and solve.
WHY don't you know "how to get there"?jamieleeann said:The sum of two numbers is 42. One number plus two times the other number is 57. What are the numbers? The answers are 15 and 27 but I dont know how to get there. Help?
let the numbers = x and y; then:
x + y = 42
x + 2y = 57
Do you know how to solve that?
apm said:Let the 2 numbers be a and b
You're supposed to use x and y, apm :roll: