Answer:
14
Explanation:
Given:
A student earned a grade of 70% on a math test that had 20 problems.
To Find:
How many problems on this test did the student answer correctly? ( round to the nearest whole number)
Solve:
When I solve these question I have a formula.
Which is
Number of question correctly ÷ Total × 100
Thus,
1/20 × 100 = 5%
2/20 × 100 = 10%
3/20 × 100 = 15%
4/20 × 100 = 20%
5/20 × 100 = 25%
6/20 × 100 = 30%
7/20 × 100 = 35%
8/20 × 100 = 40%
9/20 × 100 = 45%
10/20 × 100 = 50%
11/20 × 100 = 55%
12/20 × 100 = 60%
13/20 × 100 = 65%
14/20 × 100 = 70%
15/20 × 100 = 75%
16/20 × 100 = 80%
17/20 × 100 = 85%
18/20 × 100 = 90%
19/20 × 100 = 95%
20/20 × 100 = 100%
As you can see that 14/20 × 100 = 70%
Hence, the student answer 14 question correct.
Kavinsky