Answer:
A) The width is 12 cm; the average time is 3 minutes
Step-by-step explanation:
![\frac{5}{3}= \frac{20}{y}](https://tex.z-dn.net/?f=%5Cfrac%7B5%7D%7B3%7D%3D%20%5Cfrac%7B20%7D%7By%7D)
Cross multiply.
5 × y = 3 × 20
5y = 60
5y ÷ 5 = 60 ÷ 5
y = 12
The width is 12 cm. Moving onto the time.
![\frac{12}{4} =\frac{y}{1}](https://tex.z-dn.net/?f=%5Cfrac%7B12%7D%7B4%7D%20%3D%5Cfrac%7By%7D%7B1%7D)
Cross multiply.
4 × y = 12 × 1
4y = 12
4y ÷ 4 = 12 ÷ 4
y = 3
The time is 3 minutes.
Answer:
15
Step-by-step explanation:
6:3 if the ratio of the volume