Question

If 15 bananas measure 1.2 kg, then find the weight of one banana. (Give your answer in grams).
A. 80 gms
B. 70 gms
C. 60 gms
D. 50 gms

Answer 1

Hint: The simple unitary method, or division, will be used in this problem. If we have a measurement of multiple items and need to find the measurement for a single item, we simply divide the total measurement by the total number of items. For example, if the the price of x items is Rs. y, then the price of each item, R, can be given by-
${\text{R = }}\dfrac{y}{x}$

Complete step-by-step answer:
We have been given the weight of 15 bananas, which is equal to 1.2 kg. First, we will convert the kilograms into grams because we need to find the final answer in grams. We know that-
$1 kg = 1000 g$
$1.2 kg = 1.2(1000) g = 1200 g$

So, we have been given the weight of 15 bananas as 1200 g.
To find the weight of each banana, we will divide the total weight by the total number of bananas which is 15. This can be done as-
$\dfrac{{1200}}{{15}} = 80\;gms$

This is the required answer. The correct option is A.

Note: To solve this question, one should have knowledge of division and the unitary method. Also, we should remember the conversion between different physical quantities, especially because we are asked to give the answer in terms of a particular unit.