whatbis the simple interest on #75 for 4 years at 2¹/² per annum

The simple interest on #75 for 4 years at 2¹/₂% per annum is:

I = (P * R * T) / 100
where:
I = interest
P = principal amount (the initial amount borrowed or invested) = #75
R = annual interest rate = 2¹/₂%
T = time in years = 4

I = (75 * 2.5 * 4) / 100
I = 7.50

Therefore, the simple interest on #75 for 4 years at 2¹/₂% per annum is #7.50.

To find the simple interest on $75 for 4 years at 2 ½% per annum, we can use the formula:

Simple Interest = (Principal * Rate * Time) / 100

Here's how you can calculate it step by step:

Step 1: Convert the percentage to decimal form:
2 ½% = 2.5 / 100 = 0.025

Step 2: Substitute the values into the formula:
Principal = $75
Rate = 0.025
Time = 4 years

Simple Interest = (75 * 0.025 * 4) / 100

Step 3: Calculate:
Simple Interest = (75 * 0.1) / 100
= 7.5 / 100
= $0.75

Therefore, the simple interest on $75 for 4 years at 2 ½% per annum is $0.75.