Question

I seem to be having problems on this question please help me thank you

Answer 1

Given:

The original amount = $6600.

Interest = 21 %.

Aim:

We need to find the year-end amount.

Step-by-step explanation:

a)

`We\text{ know that year-end amount = original amount+21 \% of the original amount.}`

`Y\text{ear-end amount = original amount+}(21)/(100)\text{ }*\text{original amount.}`

`Y\text{ear-end amount = original amount+0.21 }*\text{original amount.}`

Take out the common term that is the original amount.

`Y\text{ear-end amount = }(\text{ 1+0.21 })*\text{original amount.}`

`Ye\text{ar-end amount = }(\text{ 1.21 })*\text{original amount.}`

`Y\text{ear-end amount = 1.21 }*\text{original amount.}`

b)

`Y\text{ear-end amount = 1.21 }*\text{original amount.}`

Substitute original amount = $6600 in this equation.

`Y\text{ear-end amount = 1.21 }*6600`

`Y\text{ear-end amount = \$ 7986}`

Final answer:

`Y\text{ear-end amount = 1.21 }*\text{original amount.}`

`Y\text{ear-end amount = \$ 7986}`