the cost of 3 pens and 2 pencils is rupees 110 represent this situation with a linear equation in two variables also find the cost of one pencil if one person one pen one pen cost rupees 20
the cost of 3 pens and 2 pencils is rupees 110 represent this situation with a linear equation in two variables also find the cost of one pencil if one person one pen one pen cost rupees 20
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
let the no. of pens be x
and no.of copies be y
then the total cost of all the material bought is 110 rs
then the equation will be,
3x+2y=110
it is the equation.
given 1 pen costs 20rs
so x=20
3(20)+2y=110
60+2y=110
2y=110-60
2y=50
y=50/2
y=25
therefore cost of 1 copy=rs 25
Explanation: