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In 1970, a record 1.5 inches of rain fell in one minute at Brasse Terre, Guadalupe in the Caribbean. At this rate how much rain fell in 3 seconds or 0.05 of a minute? A 3 inches... B 0.075 inch... C 0.75 inch... D 30 inch. Pick one. Evan chose D as the correct answer. How did he get that answer?
Answer:
Option B is correct.
Step-by-step explanation:
Given.
The rain fall rate is 1.5 inches per minute.
How much rain fall in 3 second or 0.05 of minute?
First we find rain fall rate in one second.
So, 0.025 inches of rain fall in one second.
Therefore, the rain fall in 3 second is
The rain fall in 3 second is 0.075 inches.
If you chose option D is correct
If the rain fall is continue to 20 min at the rate of 1.5 inches per min, then the rain fall will be 30 inches.
The rain fall in 3 second is 0.075 inches.
Answer:
Eduardo's second statement is wrong.
Step-by-step explanation:
Eduardo says that an increase from 10 to 40 is 300% which is true. Because there is an increase by (40 - 10) = 30 and the percent of increase is calculated with respect to 10.
So, % of increase = %.
But when we consider a decrease from 40 to 10, then the decrease is by (40 - 10) = 30, but the percent of decrease will be calculated with respect to 40.
Therefore, the % decrease = %.
Hence, Eduardo's second statement is wrong. (Answer)