The average rate of hair growth is 2.5 centimeters every
2 months. At that rate, how many months will it take to grow
22.5 centimeters of hair?
To calculate the number of months it will take to grow 22.5 centimeters of hair at a rate of 2.5 centimeters every 2 months, we can set up a proportion:
2.5 centimeters is grown every 2 months
1 centimeter is grown every (2/2.5) = 0.8 months
22.5 centimeters will be grown in 22.5 * 0.8 = 18 months
Therefore, it will take 18 months to grow 22.5 centimeters of hair at a rate of 2.5 centimeters every 2 months.