I agree with you, and since you got the right answer, you would know why.
1700/2890 ≈ 0.5882 = 58.82%
However, usually, you should write about 58.82% as it isn't exactly 58.82
Updated: sorry 'write' not right... :(
Answer:
The number of students that passed both subjects=45
Step-by-step explanation:
Step 1
Determine total number of students that passed both subjects using the expression below;
p=n-f
where;
p=number that passed both
n=total number of students
f=total number that failed both subjects
In our case;
p=unknown
n=50 students
f=5
The expression can also be written as:
number that passed both=total number of students-number that failed both subjects
replacing;
number that passed both=(50-5)=45
The number of students that passed both subjects=45
There are two ways you could do it, one involves a calculator and one doesn't.
Calculator:
You would just do 4500 × 1.7 = $7650
Non-calculator:
First you'd divide 4500 by 10 to get 10%, which is 450. Then you'd multiply 450 by 7 to get 3150. Now you just add 4500 and 3150 to get $7650
I hope this helps!