rts. When her he number of nber of skirts iends to find EXERCISE 3.2 1. Form the pair of linear equations in the following problems, and find their solutions graphically. (1) 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 (i) 5 pencils and 7 pens together cost Rs 50, whereas 7 pencils anal s perls together cost Rs 46. Find the cost of one pencil and that of one pen. by y. Then On comnaring the ratios 4, 9 and 1 , find out whether the lines representing the