Math, asked by babaraothengane399, 2 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

Previous Question

Next Question

Similar questions

Math, 1 month ago

If a two-digit no. is multiplied with a three-digit no. the product cannot have more than.

Physics, 1 month ago

वुडन पीस ऑफ वॉल्यूम 20 सेंटीमीटर क्यूब हैव ए मास ऑफ 1 ग्राम फाइंड द डेंसिटी ऑफ wood ...

Science, 1 month ago

a) What are the various products of coal obtained by above process? b) Why is coke considered as a better fuel than coal?

English, 2 months ago

define parenchyma (⊙_◎)...

Physics, 2 months ago

Explain how conduction, convection and radiation are minimised in a thermosa stinguish between...

Math, 9 months ago

how to use barinly ??

English, 9 months ago

Speech on topic time importance and management...

Physics, 9 months ago

Photoelectric work function for a surface is 2.4 eV. Light of wavelength 6.8 x10-7 m shines on the surface. Find the frequency of incident light and also the threshold frequency. Will there be photoelectric emission or not?