in a school 70% were boys and other are girls 32 boys left the school

1.	in a school 70% were boys and other are girls 32 boys left the school and 32 girls come the percentage of boys become 54% find the previous number of students
Answer» ong>Step-by-step EXPLANATION: LET the number of students be x the number of boys=x×70/100 =7x/10 the number of girls=x×30/100 =3x/10 after 32girls come the TOTAL girls=3x/10+32 after 32 boys left total boys=7x/10-32 A/q or, 54% of x=7x/10-32 or,54x/100 =7x/10-32 or,54x/100-7x/10= -32 or,-16x/100 =-32 or,x = -32×100/-16 or,x=2×100 or,x=200

in a school 70% were boys and other are girls 32 boys left the school and 32 girls come the percentage of boys become 54% find the previous number of students

Answer»

ong>Step-by-step EXPLANATION:

LET the number of students be x

the number of boys=x×70/100

=7x/10

the number of girls=x×30/100

=3x/10

after 32girls come the TOTAL girls=3x/10+32

after 32 boys left total boys=7x/10-32

A/q

or, 54% of x=7x/10-32

or,54x/100 =7x/10-32

or,54x/100-7x/10= -32

or,-16x/100 =-32

or,x = -32×100/-16

or,x=2×100

or,x=200