The ratio is: 3 to 4
The ratio is: 2 to 1
ratio is 1:2 in other words for every 1 boy there are 2 girls
The ratio is 4:5
I'm guessing u ment that the ratio was 4:3 so you do 35 divided by 7 (4+3) = 5 4 times 5 =20 (boys) 3 times 5 = 15 (girls) so there are 5 less girls than boys
The ratio is: 3 to 4
The ratio is: 2 to 1
ratio is 1:2 in other words for every 1 boy there are 2 girls
The ratio is 4:5
I'm guessing u ment that the ratio was 4:3 so you do 35 divided by 7 (4+3) = 5 4 times 5 =20 (boys) 3 times 5 = 15 (girls) so there are 5 less girls than boys
Andd thee answeer is......20 girls and i don't want 2 explain =)
First add 8 and 9 to get 17. Then divide 340 by 17 to get 20. Then times 20 by 8 to find the number of girls or times 20 by 9 to get the number of boys. Number of girls: 160 Number of boys: 180
The probability of choosing 2 girls at random from group of 25 students of which10 are girls and 15 are boys is:P( 2 girls) = (10/25)∙(9/24) = 3/20 = 0.15 = 15%
It is 1.566... repeating metres.
Ok, if there is one girl to every nine boys, there are 10 kids in all. that means that if there are 2 girls, you have to double 9, making 18, adding up to 20. . so, 2 girls and 18 boys. If there are 4 girls, then multiply 9 times 4. 4x1 and 4x9. and then you get your answer.
5g = 1b (5 girls for every 1 boy) Xg = 20b (unknown number of girls for every 20 boys.) It looks like the answer is as easy as multiplying 20 by 5, which equals 100. Why? Well if you actually had a bunch of girls and boys together, you would get 20 boys and ask that 5 girls go to each boy. Then imagine in your head how many girls there are around the 20 boys, even if you have to draw a picture.
15/20=3/4