pls give detailed working with steps
2006-09-29 20:14:37 · 6 answers · asked by nagendra g 2 in Science & Mathematics ➔ Mathematics
well... let's say x=no. of boys. =>14.285%*x=no.of girls
14,285%*x + x =560
x(14.285% + 100%)=560
x * 114.285%=560
x=560/114,285% =560*100/114.285 ~=490 (boys)
no of girls=560-490=70.
2006-09-29 20:34:08 · answer #1 · answered by A 3 · 0⤊ 0⤋
The number of boys we will call x. So x+.14285x=560. This is simplified to 1.12285x= 560. Divide to get that x=490. So there are 490 boys. 560-490= 70 girls.
2006-09-30 03:25:41 · answer #2 · answered by weebat 3 · 0⤊ 0⤋
out of 100 no.of girls = 14 2/7 therefore out of 560 it is 560x100/7=80. hope i'm correct
2006-09-30 03:25:43 · answer #3 · answered by Anonymous · 0⤊ 0⤋
g + b = 560
g = 14.285%b or .14285b
.14285b + b = 560
1.14285b = 560
b = about 490 boys
g + 490 = 560
g = 70
about 70 girls
about 490 boys
2006-09-30 12:38:44 · answer #4 · answered by Sherman81 6 · 0⤊ 0⤋
The correct answer is 70 girls, since it is 14.285% of the number of boys (not 14.285% of the number of students, which would be 80).
2006-09-30 03:40:46 · answer #5 · answered by Karl 2 · 0⤊ 0⤋
80 Girls and 480 boys.I have finished my engg degree 18 years back. This child given me a chance to use my briain. thankx
2006-09-30 03:37:21 · answer #6 · answered by sekar_eil 2 · 0⤊ 0⤋