Question

19. If the demand for fertilizer product is given by
p + 5q = 21 and the supply is determined
p-2q 7, where p and q denote the price of the
commodity and q is the number of units of fertilizer
product supplied. If a man wants to buy q units of
fertilizer product, then the amount paid by him is
(1) Rs.22
(3) Rs.32

(2) Rs.30
(4) Rs.24


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Answer 1

Answer:

He needs to pay rs 22

Step-by-step explanation:

p+5q-p+2q=21-7

7q=14

q=2

p+10=21

p=11

toal amount =number of product * price of product

=2*11

=22

Answer 2

Answer:

p+5q=21

p-2q=7

-. +. -

7q=14

q=2

&

p=11

amount paid = no. of units * price of a commodity

= q=2*p=11

2*11=22 ans...