The fifth triangle number, known as T5 is 15.
The answer is 15. One fifth of 12,000 is 600. One quarter of 600 is 150. One tenth of 150 is 15 !
Finding one fifth of a number is the same as multiplying the number by 1/5, or 0.2. In this instance, 45 x 0.2 = 9.
Starting with 1, it is 15.
15 and one half divided by 2 and one fifth = 7.5
The fifth triangular number is 15
There are 75 one-fifths in the number 15. 15/(1/5) = 75 75 x (1/5) = 15
x/15 = 6, x = 90, 10% = 9
sigh, 18...
15
40
The number is 50.
100
8/15
15
one-fifth = 1/5 as a fraction or 0.2 as a decimal
Yes, it is.