The answer is and
A multiple of any fraction number is the amplifyng of the base fraction with a same integer number, excluding the number zero, both in the numerator and in the denominator.
Give a fraction number
A Multiple is , where n is an integer without zero
So, using n=2 and n=3
its 60-10+x why, because she bought the dress with $60 and she received $10 dollars back. We don't know the variable.
48/40 = 1 8/40
1 8/40 Simplify to 1 1/5
Hope this helps!