You can treat ratios as fractions
x:13=48:104
x/13=48/104
simplify 48/104
48/104=24/52=12/26=6/13
x/13=6/13
multiply both sides by 13
x=6
the missing number is 6
They do have the same absolute values.
|9| = 9
|-9| = 9
do not know
Step-by-step explanation:
If 40% are boys, 60% are grills.
As fractions:
4/10 = 2/5 are boys
6/10 = 3/5 are grills
70% or 7/10 of the boys arrive by car:
(2/5)(7/10) = 14/50 = 7/25
And 60% or 3/5 of the grills arrive by car:
(3/5)(3/5) = 9/25
So in total we have 7/25 + 9/25 = 16/25 = 64/100 = 64%
64% chance that a child arrives by car.
