8. Erin has a number of pens. James has 4 times as many pens as Erin. Together they have 35 pens. How many does
2 answers:
Answer:
Erin has 7 pens and James as 28 pens.
Step-by-step explanation:
Let e = the number of Erin's pens
Let j = the number of James' pens
e + j = 35 j = 4e
substitute in 4e for j in the first equation above.
e + j = 35
e + 4e = 35
5e = 35 Divide both sides by 5
e = 7 Plug 7 in for e in either equation above.
j = 4e
j = 4(7)
j = 28
Answer:
Erin has 8.75 pens or just 9 pens
Step-by-step explanation:
35÷4= 8.75 then round
then to cheak your answer you would do 8.75×4= 35.
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