Question
Ana has bought 
kg of flour. Mary has bought 
kg of flour and Kristina has bought 
kg of flour. The one who has bought more flour is
- Ana
- Mary
- Kristina
- Ana & Mary both
Hint:
In this question the concept of rational numbers is used, Rational numbers are those numbers which are in the form of p/q where p and q are integers and q is not equal to 0. Some examples are 2/3, -1/2, 4, etc.
Here in this question, we will use the same concept of rational numbers and the properties to find out who has bought more flour.
The correct answer is: Mary
So as per the the question, we have given that:
ana has bought kg of flour
mary has bought kg of flour
kristina has bought kg of flour
Lets simplify the numeric values, we get:
Now making the denominator same of all three rational numbers, we get:
Now comparing the terms, we get:
So, Mary has bought more flour.
Here the concept of rational numbers was used. The terms were equalized with respect to the denominator and we found that Mary bought maximum flour. The rational numbers were simplifies first to make the terms easier.
Related Questions to study
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