Question

Melodie, a super excited Khan Academy user, has increased her points by 75% in a week. She's at 14,000 points now. How many points did Melodie have on Khan Academy last week?

Answer 1

Answer:

8,000 points.

Step-by-step explanation:

Let x be the number of points Melodie have on Khan Academy last week.

We have been given that Melodie has increased her points by 75% in a week. She's at 14,000 points now.

We need to figure out x such that x plus 75% of x equals 14,000. We can represent this information in an equation as:

$x+(\frac{75}{100}*x)=14,000$

$x+0.75x=14,000$

$1.75x=14,000$

Upon dividing both sides of our equation by 1.75 we will get,

$\frac{1.75x}{1.75}=\frac{14,000}{1.75}$

$x=8,000$

Therefore, Melodie have 8,000 points on Khan Academy last week.