COMPUTING INTEREST 
360 DAY BASIS 
The following* will he found to he excellent 
rules for finding: the interest on any prin- 
cipal for any number of days. When the 
principal contains cents, point off four 
places from the right of the result to ex- 
press the interest in dollars and cents. 
When the principal contains dollars only, 
point off two places. 
• Pour Per Cent. — Multiply the principal hy 
the number of days to run, and divide hy 90. 
Pive Per Cent. — Multiply hy number of 
days, and divide hy 72. 
Six Per Cent. — Multiply hy number of 
days, and divide hy 60. 
Eight Per Cent. — Multiply hy number of 
days, and divide by 45. 
Nine Per Cent. — Multiply hy number of 
days, and divide hy 40. 
Ten Per Cent. — Multiply hy number 
days, and divide hy 36. 
of 
