plz solve this and if u dont know plz skip don't answer rubbish
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Answer:
The cost of each pen is Rs. 10 and the cost of each pencil is Rs. 36
Step-by-step explanation:
Let the cost of 1 pen be Rs. p and the cost of 1 pencil be Rs. c.
5c + 7p = 250 ... (i) x 5
7c + 5p = 302 ... (ii) x7
Multiply equation (i) by 5 and equation (ii) by 7.
25c + 35p = 1250 ... (iii)
49c + 35p = 2114 ... (iv)
(iii) - (iv)
25c - 49c + 35p - 35p = 1250 - 2114
- 24c = - 864
c = -864 ÷ -24
c = 36
Using c = 36 in (i)
(5 x 36) + 7p = 250
180 + 7p = 250
7p = 250 - 180
7p = 70
p = 70 ÷ 7
p = 10
So, the cost of each pen is Rs. 10 and the cost of each pencil is Rs. 36