in a school3/7 of the students are girls . if there are 240 boys , find the number of girls
Answers
Answered by
64
let the total no of students be x
3x/7+240=x
x-3x/7=240
(7x-3x)/7=240
4x=240×7
x=240×7÷4
x=420
no, of girls=420×3/7
no of girls=180
please mark it brainliest
3x/7+240=x
x-3x/7=240
(7x-3x)/7=240
4x=240×7
x=240×7÷4
x=420
no, of girls=420×3/7
no of girls=180
please mark it brainliest
hargunchattha5:
plese tell this question answer
which one???
find the coast of 4 2/5 meters of lace at the rate of ` 15 per metre
plese tell me
kine time me btao ge
length of lace=2/5m No of lace=4 rate of cost of lace=15 per m cost of lace=4×2×15
cost of lace=120rs
i am sorry
cost of lace=4×2×15/5=24rs
Answered by
20
a/q
3/7of x=girls
boys =240
3/7x=x-240
3/7x-x=-240
-4/7x=-240
-4x=-240*7
x=-1680/-4=420
girls, 3/7*420=180girls
3/7of x=girls
boys =240
3/7x=x-240
3/7x-x=-240
-4/7x=-240
-4x=-240*7
x=-1680/-4=420
girls, 3/7*420=180girls
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