Question

A colony of Fruit Flies triples every 30 minutes. If there are 19 683 Fruit Flies now, how many were present 2 hours ago?

Answer 1

number 30 previous to current = 19683 / 3 = 6561
1 hour previous = 6561 / 3 = 2187
1.5 hours previous = 729
2 hours previous =  243








                        
                   

Answer 2

The number of fruit flies before 2 hours is 243.

What is an expression?

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

The number of the flies is calculated as:-

The number 30 previous to current = 19683 / 3 = 6561

1 hour previous = 6561 / 3 = 2187

1.5 hours previous = 729

2 hours previous =  243

Therefore, the number of fruit flies before 2 hours is 243.

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