Question

In a certain math game, each problem is either easy or hard, and problems of the same difficulty level are worth the same number of points. Sandra

played this game twice.

. In the first game, she correctly answered 10 easy problems and 8 hard problems for a total of 94 points.
. In the second game, she correctly answered 5 easy problems and 16 hard problems for a total of 143 points.

The system below can be used to determine z, the number of points per easy problem, and y, the number of points per hard problem.
10z + 8y = 1
(5z + 16y=143
Which is the quickest method of finding the number of points per easy problem?

O Subtract 2 times the bottom equation from the top equation.

Subtract 2 times the top equation from the bottom equation.

Add 2 times the bottom equation to the top equation.

O Add 2 times the top equation to the bottom equation.

Answer 1

Answer: 18.75%

Explanation:

To find the percent increase, we need to calculate the difference between the new speed and the old speed, divide that by the old speed, and then multiply by 100 to get the percentage increase.

The difference between the new speed and the old speed is:

38 - 32 = 6

To find the percentage increase, we divide the difference by the old speed and multiply by 100:

(6 / 32) x 100 = 18.75%

Therefore, Matt's typing speed increased by 18.75%.