Question

the price of a pen is rs 42 and of a notebook is Rs 18. calculate how many pen and notebook you can buy for Rs 480 if you want to buy an equal quantity of both​

Answer 1

x - quantity of pens and notebooks

x*42+x*18=480

x(42+18)=480

60x=480

x=480/60=8

Check

8*42=336

8*18=144

336+144=480

Answer: For 480 Rs I can buy 8 notebooks and 8 pens.