Math, asked by babaraothengane399, 4 months ago

the cost of 8book and 5pen is 420rupees and the total cost of 5 book and 8pen is 321rupees . find the cost of 1book and 2pen

Answers

Answered by abutalha29at

1

Answer:

69

Step-by-step explanation:

8x+5y=420

5x+8y=321

13x+13y=741

x+y=57

3x-3y=99

x-y=33

y+33+y=57

x=33+12=45

y=2*12=24

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