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Mary weighs n kg while her sister weighs 15 kg less. How many times is Mary heavier than her sister?

2 Answers

6 votes

Answer: Mary is
(n)/(n-15) times heavier then her sister.

Explanation:

Given : Mary weighs n kg while her sister weighs 15 kg less.

Then, the expression to represent her sister's weight = n-15

Now, the number of times Mary is heavier than her sister is given by :-


\frac{\text{Mary's weight}}{\text{Sister's weight}}\\\\=(n)/(n-15)

Hence, Mary is
(n)/(n-15) times heavier then her sister.

User Ahmed Ziani
by
8.1k points
3 votes

Answer:

Mary is
(n)/(n-15) times heavier than her sister

Explanation:

Mary's Weight = n

Sister's Weight = n - 15

To find how many times mary is heavier, we need to multiply "that many time" [let it be x] with sister's weight to get Mary's weight.

e.g. If someone weighs 100 and another person 50, 50 * 2 = 100, thus, 100 kg person is 2 times heaving. We do same for this:

(n - 15) * x = n

x = n/(n - 15)

User AbraCadaver
by
8.3k points

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