Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
primary 6 | Maths
| Percentage
One Answer Below
Anyone can contribute an answer, even non-tutors.
Pls help
Date Posted: 5 years ago
Views: 374
Let S represent Nina's salary.
She spent $2800 on a TV.
She also spent 6/10 * (S - $2800) on a sofa.
Then, she had 3/10 S left.
S - $2800 - 6/10 * (S - $2800) = 3/10 S
First, we expand out:
S - $2800 - 6/10 S + $1680 = 3/10 S
Shift the variables to one side:
7/10 S = $1120
Lastly, we multiply 10/7 on both sides:
S = $1600
She spent $2800 on a TV.
She also spent 6/10 * (S - $2800) on a sofa.
Then, she had 3/10 S left.
S - $2800 - 6/10 * (S - $2800) = 3/10 S
First, we expand out:
S - $2800 - 6/10 S + $1680 = 3/10 S
Shift the variables to one side:
7/10 S = $1120
Lastly, we multiply 10/7 on both sides:
S = $1600
See 1 Answer
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Hope u can follow solution
Date Posted:
5 years ago
360 Tutoring Program