what is the next number in this series: 60, 30, 20, 15, 12?

2 ⤊

what is the next number in this series: 60, 30, 20, 15, 12?

2006-12-06 17:56:25 · 4 answers · asked by Carolyn J 1 in Science & Mathematics ➔ Mathematics

4 answers

The next number is 10.

2006-12-07 02:50:52 · answer #1 · answered by ludacrusher 4 · 0⤊ 0⤋

Should be 10

Observe the rate of decrease
from 60 to 30 it is 1/2
30 to 20 it is 1/3
20 to 15 it is 1/4
15 to 12 it is 1/5
so the next value in this series is 1/6 you apply to 12 to find 10

2006-12-07 02:12:00 · answer #2 · answered by motola m 2 · 1⤊ 0⤋

60 x 1/2 = 30
30 x 2/3 = 20
20 x 3/4 = 15
15 x 4/5 = 12
12 x 5/6 = 10 Ans

2006-12-07 02:07:06 · answer #3 · answered by Scythian1950 7 · 1⤊ 0⤋

10 just feels right

2006-12-07 02:12:24 · answer #4 · answered by walkinandrockin 3 · 0⤊ 1⤋