one tablespoon of white sugar contains 45 calories. how many calories are in 8 tablespoons of white sugar?

Question

math word problem

Answer 1

In this question using ratio/proportion and solve for the unknown:

 

first determine what is known (one tablespoon/45 calories) and we do not know how much calories are in 8 tablespoon

 

one tablespoon (1T)/45 calories=8tablespoon (8T)/X calories, now, cross multiply to find for X:

 

once we set up our units correctly, we won't follow the units during cross multiply to avoid confusions.

Just remember: since I started 1T (one tablespoon) on the numerator and 45 calories on the denominator making sure the other side of our equation start with the same units.

 

X(1T) I/we ignore the (1T)

X=45*8= 360 calories

 

as we were looking for X calories; therefore, X= 360 calories (box your answer) :-)