3 is to 5 as x is to 20
5 goes into 20 4 times so 3(4) gives you x
and x=12
Answer:
Step-by-step explanation:
10x-13=17x-41
DO YOUR WORK
Answer:
60 miles
Step-by-step explanation:
So if 1 inch = 12 miles, you need to find 4 inches. There are multiple ways to achieve this. However ratios/proportions might be easiest.
if 1/12 = 4/x, x is the value of miles. Cross multiply so you get this:
1 4
- = - = 60 = x
12 x
If x equals 60, that means that 4 inches equals 60 miles on the map.
You could also just find an equal fraction by multiplying the top and bottom both by 4.
8/97 = 12/x.....8 oz to 97 mg = 12 oz to x mg
cross multiply
(8)(x) = (97)(12)
8x = 1164
x = 1164/8
x = 145.5 (or 145 1/2) mg
