Question

Energy content of different foods are as follows:

Food	Energy Content per kg.
Wheat	3.2 Joules
Rice	5.3 Joules
Potatoes (Cooked)	3.7 Joules
Milk	3.0 Joules

Which food provides the least energy and which provides the maximum?
Express the least energy as a fraction of the maximum energy.

Answer 1

In the given table, we see that the minimum value is 3.0 J and the maximum value is 5.3 J.

∴ Least energy provide by food = 3.0 J i.e. milk

Food which provide the maximum energy = 5.3 J i.e. rice

∴ Required fraction = `"Least energy"/"Maximum energy"`

= `3.0/5.3`

= `30/53`