Answer:
the blue one is true
Step-by-step explanation:
Answer:
810 boys
Step-by-step explanation:
1800 students and 55% are girls.
100%-55%=45%
1800*0.45 = 810
1800*0.55 = 990
So there are 990 girls and 810 boys.
Hope this helps :)
Answer:
23 and 18
Step-by-step explanation:
the sum of there ages is 41 so by splitting the combined ages in half you can get a rough idea and adjust the numbers
3/4 = 18/24
5/6 = 20/24
18/24 < 20/24
3/4 is not equal to 5/6
Let thw second integer be x
then the first = 2x
and the third integer is = 6+x
their sum = 74
x+2x+6+x = 74
4x +6 = 74
4x = 74-6 =68
x =68÷4
x = 17
then the first integer is 2×17 = 34
the third integer is 17+6 = 23
the integers are 17 , 23 and 34
