Question

The sum of three consecutive natural numbers is equal to 60. Find the product of the lowest and highest number.

Answer 1

Answer:

399

Explanation:

Let x, x+1, x+2 be the three numbers.

x+x+1+x+2=60

3x+3= 60

3x=60-3

3x=57

x=57/3

x=19

Therefore, the numbers are 19, 20, 21.

19*21=399

Answer 2

Answer:

Here's a simple arithmetic solution.

Find the mean of the three numbers.

60/3=20

The other two numbers must have a mean of 20 also.

The numbers are consecutive integers.

20-1=19 and 20+1=21 (19+21=40, 40/2=20)

The numbers are 19,20, and 21

19+20+21=60

lowest number =19

highest number =21

therefore multiplaction of lowest and highest number = 19*21 =399