SOLUTION: Help I can't figure this one out. Angela did 5 fewer than twice as many sit-ups as Paula. Between the two of them, they did a total of 136 sit-ups. How many sit-ups did Angela d
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-> SOLUTION: Help I can't figure this one out. Angela did 5 fewer than twice as many sit-ups as Paula. Between the two of them, they did a total of 136 sit-ups. How many sit-ups did Angela d
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Question 261588: Help I can't figure this one out. Angela did 5 fewer than twice as many sit-ups as Paula. Between the two of them, they did a total of 136 sit-ups. How many sit-ups did Angela do? Thanks1 Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! let a = no. done by Angela
let p = no. done be Paula
:
Write an equation for each statement:
:
Angela did 5 fewer than twice as many sit-ups as Paula.
a = 2p - 5
:
Between the two of them, they did a total of 136 sit-ups.
a + p = 136
Replace a with (2p-5) in the above equation, find p
(2p - 5) + p = 136
2p + p = 136 + 5
3p = 141
p +
p = 47 pull-ups by Paula
then
a = 2(47) - 5
a = 94-5
a = 89 pull-ups by Angela
;
;
Check that in the statement:
they did a total of 136 sit-ups.
47 + 89 = 136
