Question

GENIUS CAN ONLY SOLVE MY QUESTION ​

Answer 1

Here is answer of your question

Answer 2

Answer:

let the cost of pen be x and pencil be y

now A/Q

18x+72y=324

x+4y=18( here I have taken 18 as a common)

x+4y=18 eq-1

now

11x+96y=237 eq-2

now multiply eq-1 by 11 and eq-2 by 1 as both 11 and 1 is cofficient of x

now subtract eq2 from eq-1

11x+44y=198

11x+96y=237

52y=39

y =39/52

y=3/4

put the value of y in eq-2 and find x and then solve it further if u still have problem then follow me I will text u ...