Question

$\mathtt {\huge {\boxed {\red { Question } } } }$
Check Attachment
Step By Step Explanation Needed
$\mathtt { {\boxed {\red { Spam = Report } } } }$
​

Answer 1

Answer:

Answer

Let the cost of a pen be Rs.x and that of a pencil be Rs.y. Then,

37x+53y=320 .(i)

and, 53x+37y=400 ..(ii)

Adding equations (i) and (ii), we get

90x+90y=720⇒x+y=8 ..(iii)

Substituting equation (i) and (ii), we get

16x−16y=80⇒x−y=5 ..(iv)

Adding equations (iii) and (iv), we get

2x=13⇒x=6.5

Substituting x=6.5 in equation (iii), we get

y=(8−6.5)=1.5

Hence, cost of one pen = Rs. 6.50 and cost of one pencil =Rs. 1.50.

Answer 2

Answer:

For answer check out the above image

I hope it helps you please mark me brainlist