Question

3kg patato and 4k.g. brinjal cost price 40 rupees. 4k.g. patato and 3k.g. brinjal cost price 37 rupees.then how much cost price will be 8k.g. patato and 7k.g. brinjal . Math solution

Answer 1

Answer:

3p+4b=40

4p+3b=37

on simplifying,

12p+16b=160

12p+9b=111

on simplifying

7b=49

b=7

therefore

p=4

finally

8p+7b= 8*4+7*7= 81.