Question

Enny is cooking a chicken for dinner. A chicken needs be cooked for 40 minutes per kilogram, plus an extra 20 minutes. How long will it take to cook a chicken weighing 3 kilograms

Answer 1

140

Explanation:

First you put it into an equation (40x + 20=?)

Plug in what you know, in this case x=3.

40(3) + 20= ?

Now solve.

40 times 3 equals 120. 120 plus 20 equals 140.

40(3) + 20= 140

Answer 2

140 minutes (2 hours and 20 minutes)

Explanation:

The expression would be:

Let x = kilograms

40x + 20

substitute our value in:

40(3) + 20

120 + 20

140 minutes