15/x = 40/100. Cross multiply to get 1500 = 40x. Divide by 40 on both because you want to isolate the variable. The idem would originally cost $37.50. To check your answer you would substitute your equation and get 15/37.5 = 40/100. Just so you know a decimal can be in a fraction. Cross multiply to get 1500 = 1500. <span />
Solve the terms in parentheses first. We'll start on the denominator.
The denominator has an exponent for a fraction that also includes exponents. To multiply exponents within parentheses that are raised to a power, use this rule:
Simplify the denominator:
Solve the fractions in the numerator:
The problem should now read:
There is a denominator in a denominator. We can bring that to the numerator of the overall fraction:
Using a calculator, simplify the numerator:
The fraction should now read:
There is a denominator in the numerator. This can be brought down to the overall denominator:
Factor 19683:
Simplify the exponents:
The following fraction will be your answer:
Answer:
(4,-4)
Step-by-step explanation:
Hi
Left to do 40% of the shopping
12 items ⇒ 60% of the items
x items ⇒ 40% of the items
60x = 12(40)
60x = 480
x = 480/60
x = 48/6
x = 8 items
Answer:
Left 8 items of the list (40% of the shopping)
Items: 12+8 = 20 items on her list