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#12087

rate

arithmetic

linear

medium

50 sec

During a science experiment, a sunflower's height was measured each day for 15 days. The scientist observed the height increased by an average of 2.5 centimeters per day. If on the last day the sunflower's height was 67.5 centimeters, what was its height, in centimeters, at the start of the experiment?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.