Question

EXERCISE 3.2
Form the pair of linear equations in the following problems, and find their solutions
graphically.
(i) 10 students of Class X took part in a Mathematics quiz. If the number of girls is 4
more than the number of boys, find the number of boys and girls who took part in
the quiz.
(ii) 5 pencils and 7 pens together cost * 50, whereas 7 pencils and 5 pens together
cost 46. Find the cost of one pencil and that of one pen.
On comparing the ratios
ą, b
and , find out whether the lines representing the
C2
az b₂​

Answer 1

Answer:

1)No. of girls is 7

and no. of boys is 3

2)Cost of one pencil is 10rs that of one pen is 5rs

Step-by-step explanation:

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