Question

solve for thank you answer plz

Answer 1

Answer:

Step-by-step explanation:

let the no of packets be x 

let the cost of each packet be y

so xy = 80 ⇒ y = 80/x

so if he would have bought 4 more packets for the same amount, each packet would have cost rupees 1 less  (x+4)(y-1)=80

⇒ (x+4)(80/x-1)=80

⇒ x² + 4x - 320 = 0

⇒ x² + 20x - 16x - 320 = 0

⇒ (x - 16)(x + 20) = 0

so x = 16 or - 20 

so number of packets can't be negative

so 16 packets he bough

Read more on Brainly.in - https://brainly.in/question/73411#readmore