Question

1. (12 points) A newlywed couple want to buy a house. They received $4500 in cash as wedding gifts.

Answer 1

Answer:

They need 18 full years to become homeowners.

Step-by-step explanation:

They received $4,500 in cash as wedding gifts.

They will need $10,000

Difference = $10,000 - $4,500 = $5,500

Use formula

$I=P\cdot r\cdot t,$

where

I = interst

P = principal

r = rate

t = time

In your case,

I = $5,500

P = $4,500

r = 0.07 (or 7%)

t = unknown

Hence,

$5,500=4,500\cdot 0.07\cdot t\\ \\5,500=315t\\ \\t=\dfrac{5,500}{315}=\dfrac{1,100}{63}\approx 17.46$

They need 18 full years to become homeowners.