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The expression 
0.7(1.25 p) represents the amount Amadou paid for dinner at a restaurant after he applied a discount coupon and added tip. Which changes to the original price could have resulted in the expression?

25% tip and then a discount of 
30%

0.25% tip and then a discount of 
0.7%
A discount of 
70% and then 
125% tip
A discount of 
30% and then 
0.25% tip

The expression 0.7(1.25p) 0.7(1.25 p) represents the amount Amadou paid for dinner at a restaurant after he applied a discount coupon and added tip. Which changes to the original price could have resulted in the expression?\newline25% 25 \% tip and then a discount of 30% 30 \% \newline0.25% 0.25 \% tip and then a discount of 0.7% 0.7 \% \newlineA discount of 70% 70 \% and then 125% 125 \% tip\newlineA discount of 30% 30 \% and then 0.25% 0.25 \% tip

Full solution

Q. The expression 0.7(1.25p) 0.7(1.25 p) represents the amount Amadou paid for dinner at a restaurant after he applied a discount coupon and added tip. Which changes to the original price could have resulted in the expression?\newline25% 25 \% tip and then a discount of 30% 30 \% \newline0.25% 0.25 \% tip and then a discount of 0.7% 0.7 \% \newlineA discount of 70% 70 \% and then 125% 125 \% tip\newlineA discount of 30% 30 \% and then 0.25% 0.25 \% tip
  1. Analyze Expression: Let's analyze the expression 0.7(1.25p)0.7(1.25 p) to understand what it represents in terms of a discount and a tip applied to the original price pp.
  2. Distribute 0.70.7: First, we can distribute the 0.70.7 inside the parentheses to get 0.7×1.25×p0.7 \times 1.25 \times p.
  3. Calculate 0.8750.875: The multiplication 0.7×1.250.7 \times 1.25 gives us 0.8750.875. So the expression becomes 0.875×p0.875 \times p.
  4. Find Discount Percentage: The number 0.8750.875 is less than 11, which indicates that a discount was applied to the original price pp before adding the tip. To find the percentage of the discount, we subtract 0.8750.875 from 11 and then multiply by 100100. \newline10.875=0.1251 - 0.875 = 0.125\newline0.125×100=12.5%0.125 \times 100 = 12.5\%\newlineThis means a discount of 12.5%12.5\% was applied to the original price.
  5. Consider Tip: Now, let's consider the tip. The expression 1.25×p1.25 \times p suggests that a tip was added to the original price. To find the percentage of the tip, we subtract 11 from 1.251.25 and then multiply by 100100. \newline1.251=0.251.25 - 1 = 0.25\newline0.25×100=25%0.25 \times 100 = 25\%\newlineThis means a 25%25\% tip was added after the discount.
  6. Compare Options: Now we need to compare our findings with the given options to see which one matches our calculations.
  7. Match Calculations: The correct option that matches our calculations is a discount of 12.5%12.5\% (which is not explicitly given in the options but is the complement of 87.5%87.5\% to 100%100\%) and then a 25%25\% tip. None of the provided options exactly match our calculations, but the closest one in terms of the process (discount followed by a tip) is the first option: "25%25\% tip and then a discount of 30%30\%." However, the percentages do not match our findings.

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