Asked by chaya
                The variable d represents the cost of a customer's meal, in dollar. The following expression represents the amount paid, including tax.
d + 0.18d
F. The cost plus eighteen percent of the cost
G. the cost minus eighteen percent of the cost
H. the cost plus eight percent of the cost
J. The cost plus one hundred eighteen percent of the cost
I think the answer is F.
I really don't get this question
A merchant spend $92 to buy a calculator
then the merchant sold it with a 21% markup. Katherine used her calculator and found the amount of the markup to be $9.
Explain how you can use estimation to check the reasonableness of Katherine's
calculation
part B
Without doing calculation, tell whether or not Katherine's calculation is reasonable explain your answer
I really don't get this question can u help me
            
            
        d + 0.18d
F. The cost plus eighteen percent of the cost
G. the cost minus eighteen percent of the cost
H. the cost plus eight percent of the cost
J. The cost plus one hundred eighteen percent of the cost
I think the answer is F.
I really don't get this question
A merchant spend $92 to buy a calculator
then the merchant sold it with a 21% markup. Katherine used her calculator and found the amount of the markup to be $9.
Explain how you can use estimation to check the reasonableness of Katherine's
calculation
part B
Without doing calculation, tell whether or not Katherine's calculation is reasonable explain your answer
I really don't get this question can u help me
Answers
                    Answered by
            Ms. Sue
            
    Your first answer is right.
If you take 20% of 100, you'll get $20. It looks like Katherine's estimate is way off.
    
If you take 20% of 100, you'll get $20. It looks like Katherine's estimate is way off.
                    Answered by
            Ms. Sue
            
    Another way to approach this problem is to look the relationship between 9 and 90.  9 is 10% of 90, right?
    
                    Answered by
            chaya
            
    thanks your great
    
                    Answered by
            Ms. Sue
            
    You're very welcome.  :-)
    
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