It is the rainy season in central Texas.  It rained for 7 hours on Monday at a rate of 1 inch per hour.  On Tuesday, it rained for 4 hours at a rate of 2 inches per hour, and on Wednesday, it rained for 2 hours at a rate of twice that of the previous day.  What is the total combined rainfall, in inches, for these three days?
It is the rainy season in central Texas. It rained for [NUMBER] hours on Monday at a rate of [NUMBER] inch per hour. On Tuesday, it rained for [NUMBER] hours at a rate of [NUMBER] inches per hour, and on Wednesday, it rained for [NUMBER] hours at a rate of twice that of the previous day. What is the total combined rainfall, in inches, for these three days?
On Monday, 7 hours of rain at a rate of 1 inch per hour is 7*1=<<7*1=7>>7 inches of rain.
On Tuesday, 4 hours of rain at a rate of 2 inches per hour is 4*2=<<4*2=8>>8 inches of rain.
Twice the rate of Tuesday is 2*2=<<2*2=4>>4 inches per hour.
Wednesday, 2 hours of rain at a rate of 4 inches per hour is 2*4=<<2*4=8>>8 inches of rain.
The combined total of the rainfall for these three days is 7+8+8=<<7+8+8=23>>23 inches of rain.
#### 23