Answer:

Step-by-step explanation:
Given
--- candles melted

--- time to melt
Required
The time since the first was lit
If 1 candle melts in 4 hours, 2 candles will melt in 8 hours.
i.e.



For the 3rd candle that has melted, 4 inches
First, calculate the fraction that melt



The time to melt is:



So, the required time is:


Convert to minutes



Answer:
greater than (>)
Step-by-step explanation:
4/25=0.16
0.9>0.16
15
63 x 5 = 315
315/20 = 15.75
hence, 15 $20 bills
Answer:
2000
Step-by-step explanation: