SOLUTION: A person spent Rs 345 in buying pens and copies.if each pen cost Rs 5 and copy Rs 2.50 and if the total number of things was 108,how many of each did he buy?

Question 1006039: A person spent Rs 345 in buying pens and copies.if each pen cost Rs 5 and copy Rs 2.50 and if the total number of things was 108,how many of each did he buy?
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
p+c=108
p=108-c
--------------
5p+2.50c=345
5(108-c)+2.50c=345
540-5c+2.50c=345
-2.50c=345-540
c=-195/-2.50
c=78 copies
---------------
p=108-78=30 pens
-----------------
5p+2.5c=345
5*30+2.50*78=
150+195=345 total
RELATED QUESTIONS
A person spent rs 564 buying pens and pencils. If the cost of each pen is rs 7 and each... (answered by Cromlix,macston)

The total price of 4 pens and 2 copies is rs 160 and that pen Of 5 pen and 6 copies is... (answered by ikleyn)

AMIT HAD BOUGHT PENS AND PENCILS FOR RS. 345 .A PEN COSTS RS. 5 AND A PENCIL COSTS RS.... (answered by sachi)

1. A person bought some pens and pencils for Rs. 564. If each pen cost Rs.7 and each... (answered by atique.ah)

5 pencils and 7 pens together cost rs.195. While 7 pencils and 5 pens together cost... (answered by Cromlix)

Aarushi has a total of RS 590 as currency notes in the denominations of RS 50, RS 20 and... (answered by stanbon)

Hi, everyone A sum of Rs 2000 is in the denomination of Rs.50 and Rs.10 notes. if the... (answered by sachi)

A sum of Rs.800 is in the form of Rs.10 and Rs.20.If the total number of notes is 50,... (answered by addingup)

the total cost of 2 books and 7 pens is 79 rs and the total cost of 7 books and 5 pens is (answered by josgarithmetic,Naveedshahzad062@gmail.com ,MathTherapy,ikleyn)