MULTIPLICATION EQUATION: n = (1/5)p
SOLUTION: 4 books
WORKINGS
Multiplication equation to find how many books she needs to
read to get 50 ponits
Let the number of books be ‘n’
Let the number of points be ‘p’
For a multiplication equation, let’s introduce the constant,
k
Therefore, n = k·p
1 book = 5 points
When n = 1, p = 5
n = k·p
1 = k·5
1 = 5k
5k = 1
Divide both sides of the equation by 5
5k/5 = 1/5
k = 1/5
Since n = k·p
The constant, k = 1/5
n = (1/5)p
To solve for how many books she needs to read to get to 50
points
Given,
Mei has earned 30 points,
She needs to get to 50 points
Points deficient = 50 points – 30 points
= 20 points
n = (1/5)p
p = 20
Find n
n = (1/5)p
n = (1/5) * 20
n = 20/5
n = 4
Therefore, Given that Mae already has 30 points, she needs
to read 4 books to get to 50 points
