in a class of 49 students.the ratio of girls to boys is 4:3.if 4girls leave the class,the ratio of girls to boys would be?
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let no of boys be 4x and that of girls be 3x...
a/q
4x +3x =49
thus 7x=49
thus x=7
so no. of boys =4×7=28
and no. of girls =3×7=21
now 4 girls leave thus new no=17
thus new ratio =28/17.....
a/q
4x +3x =49
thus 7x=49
thus x=7
so no. of boys =4×7=28
and no. of girls =3×7=21
now 4 girls leave thus new no=17
thus new ratio =28/17.....
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