Problem solving

Question

In 2014, 16,674 earthquakes occurred worldwide. Of these, 89.6% were tremors with magnitudes of 4.9 or less on the Richter scale. How many minor earthquakes occurred in the world in 2014? Round to the nearest whole.

Answer 1

Of the 16.674 earthquakes in total, 89.6% were considered minor. 86.9% is 100% x 0.896. The number of minor earthquakes is thus 16,674 x 0.896 = 14,939.904 or 14,940 to the nearest whole number.