the greater of two numbers is 10more than the smaller. their sum is 38. Find the numbers?
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OpenStudy (sandra):
ok, so try and turn the first piece of information into an equation.
OpenStudy (anonymous):
how do i know which is x and y?
OpenStudy (sandra):
well, when you think about it, it's arbitrary. just pick in your head. so for this problem, let's say the greater number is X, and the smaller number is Y
OpenStudy (anonymous):
x=y=10?
OpenStudy (anonymous):
x= y +10?
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OpenStudy (sandra):
exactly =)
OpenStudy (sandra):
ok , so now try and turn the second piece of information into an equation. since again, you need two equations if you have two unknowns
OpenStudy (anonymous):
y+10+y=38
2y+10=38
2y=28 ???
OpenStudy (sandra):
!! great =)
OpenStudy (sandra):
and...
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OpenStudy (anonymous):
y=14
OpenStudy (sandra):
exactly =)
OpenStudy (sandra):
so what's x?
OpenStudy (anonymous):
24?
OpenStudy (sandra):
awesome job
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OpenStudy (sandra):
and yes
OpenStudy (sandra):
so X, the greater number is 24, and y, the smaller number is 14
OpenStudy (anonymous):
wow! It is much easier when there is someone helping
OpenStudy (anonymous):
thank you.
OpenStudy (anonymous):
I am going to work on a few more now while it is fresh in my head
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OpenStudy (sandra):
no problem! good luck!
OpenStudy (sandra):
yep you got it =)
OpenStudy (anonymous):
my next problem says the greater of two numbers is 3 times the smaller. Would that meant I subtract?
OpenStudy (sandra):
nope. it basically means x = 3 * y (times)
OpenStudy (anonymous):
ok. thank you
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