Consider an economy that produces only two goods, soft drinks and hamburgers. The following price and quantity statistics are available about this economy:

2015

Hamburgers

Price

= $2.00; Quantity = 2000

Soft

Drinks

Price

= $0.50; Quantity = 2000

2016

Hamburgers

Price

= $2.25; Quantity = 2000

Soft Drinks

Price

= $0.50; Quantity = 2200

Taking 2015 as the base year, find the growth rate of the

constant-price GDP in 2016. Round to the nearest whole percent

and enter just the number with no symbols.

My calculations were

2015 Constant Prices GDP: (2*2000) +(0.5 *2000)=5000

2016 Constant Price GDP: (2*2000) +(0.5*2200)=5100

Growth Rate=5100-5000/5000 *100=2%

What am I doing wrong?

Another tutor said this had a growth rate 12%? How do you figure out constant price gdp then? And how do you figure out the growth rate of it? I used the base prices of 2015 got 2%, so I'm lost.