47 70.5 − 47 ⋅ 100% = 47 23.5 ⋅ 100% = 47 2350% = 50% A n s . t h e r a t e o f in cre a se i s 50%
rate of increase = change in the value of the number / initial number = (70.5-47)/47 = 23.5/47 = 0.5 = 50%
The rate of increase from 47 to 70.5 is calculated by finding the increase in value and then expressing it as a percentage of the original number. The rate of increase is 50%.
;