a man bought a no. of pens for $63. if the cost per pen was reduced by $1, he would get 1 more pen buy paying $1 more. find the cost of each pen.(please help)
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1
Step-by-step explanation:
∴
180
x
−
180
(
x
+
3
)
=
3
⇒
1
x
−
1
x
+
3
=
1
60
⇒
x
(
x
+
3
)
−
180
=
0
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