find p from the formula i= prt/100 when i=20, r=5, and t=4
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To find the value of p from the formula i = prt/100, where i = 20, r = 5, and t = 4, we can rearrange the formula to solve for p.
The formula i = prt/100 represents the relationship between interest (i), rate (r), time (t), and principal amount (p). In this formula, p is the principal amount we want to find.
First, substitute the given values into the formula: i = 20, r = 5, and t = 4. We have:
20 = p * 5 * 4 / 100
Now we can solve for p. Let's go step by step:
1. Multiply 5 and 4: 5 * 4 = 20.
20 = p * 20 / 100
2. Divide both sides of the equation by 20 to isolate p:
20 / 20 = p * 20 / 100 / 20
1 = p / 100
3. Multiply both sides of the equation by 100 to solve for p:
1 * 100 = p / 100 * 100
100 = p
Therefore, the value of p is 100.
So, p = 100.