Question

At Ralph’s fruit stand $ 3 $ apples cost $ 90cents $ . You want to buy $ 7 $ apples. How much will it cost?

Answer 1

Hint: To solve this problem we should know about basic mathematical concepts. We should know about how to solve word problems and to solve word problems. We should know how to create an equation for a given word problem and understand what is asked and target that part of the equation.

Complete step by step solution:
According to the question,
At Ralph’s fruit stand cost of $ 3 $ apples $ = 90cents $ .
To calculate cost of an apple we divide total cost by total item,
So, cost of an apple will be $ = \dfrac{{90cents}}{3} = 30cents $
We have to find the total cost of $ 7 $ apples. So,
Total cost will be obtained by multiplying total item by cost of a single item.
 Total cost of $ 7 $ apples will be $ = 30cents \times 7 = 210cents $
From above calculation we get
Hence, The cost of $ 7 $ is $ 210cents $ .
So, the correct answer is “ $ 210cents $ ”.

Note: To solve basic words problems first try to understand what the question is asking about because in the case of mcq type questions we can simply get answers just by try and error method without investing our time. We can also solve it by creating an algebraic equation as the given price of $ 3 $ apples is $ 90cents $ . so, we can write it as $ 3x = 90cents $ here $ x $ is price of an apple. By obtaining value of $ x $ then multiply it by $ 7 $ . We will get answers.