5 years. Because -15 - it's <span>changing at a rate per year.
75/15=5 years we need</span>
One fifth is the same as

and 15 is the same as

So just times across,

×

Resulting in(1 x 15= 15, and 5 x 1= 5),

If you need/want to reduce it, divide both numbers by 5. Leaving you with the simplified answer of

or 3. Either answer works. :)
If you have any questions, just comment them down below :)
Healthcare workers use it often to Treat diseases
Answer:
7x7/6x4
Step-by-step explanation:
Answer:
12*15 + 4*15*1.5
180+90 = $270
Step-by-step explanation: