A greenhouse has 18 flowering plants among 45 plants. What percentage are flowering? Enter the number of percent.
Richtige Antwort
40
Erklärung
The relevant ratio is 18 / 45 = 0.4, and 0.4 x 100 = 40%. Inverting the ratio gives 45 / 18 = 2.5, which compares the whole with the part in the wrong direction.