in a school the total number of students was 160 in the year of 2015 in the following are the number of girls decreased by 20 and the number of boys increased by 20 as a result the number of boys become 7 times the number of girls during 2015 the number of boys was how much more than the number of girls?
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x+y=160
here
y-20+x+20=7 (× +20)now solve it
here
y-20+x+20=7 (× +20)now solve it
sethiswadhin44:
Kindly full answer plz
Answered by
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140..
let boys be x and girls be y
x+y =160
x= 7y
7y+y=160
y=20
x=140
let boys be x and girls be y
x+y =160
x= 7y
7y+y=160
y=20
x=140
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