The one should pay [tex]2\frac{3}{16}[/tex] dollars
Step-by-step explanation:
Let us revise how to multiply a mixed number by a proper fraction
- Change the mixed number to improper fraction by multiplying the whole number by the denominator and ad the the product to the numerator and put the sum over the denominator ( [tex]a\frac{b}{c}=\frac{ac+b}{c}[/tex] )
- Multiply the two numerators and multiply the two denominators
∵ One yard of a ribbon costs [tex]3\frac{1}{2}[/tex] dollars
∵ We need to find the cost of [tex]\frac{5}{8}[/tex] yards
- Multiply the cost of 1 yard by [tex]\frac{5}{8}[/tex]
∵ [tex]3\frac{1}{2}[/tex] = [tex]\frac{3(2)+1}{2}[/tex] = [tex]\frac{6+1}{2}[/tex]
∴ [tex]3\frac{1}{2}[/tex] = [tex]\frac{7}{2}[/tex]
∵ The cost = [tex]\frac{7}{2}[/tex] × [tex]\frac{5}{8}[/tex]
∴ The cost = [tex]\frac{7(5)}{2(8)}[/tex]
∴ The cost = [tex]\frac{35}{16}[/tex]
Change the improper fraction to a mixed number
∵ 35 ÷ 16 = 2 and remainder 3 ⇒ (16 × 2 = 32)
∴ [tex]\frac{35}{16}[/tex] = [tex]2\frac{3}{16}[/tex]
∴ The cost = [tex]2\frac{3}{16}[/tex] dollars
The one should pay [tex]2\frac{3}{16}[/tex] dollars
Learn more:
You can learn more about fractions in brainly.com/question/605571
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