I have a big math test tomorrow and a question on the review packet my teacher made for my class just doesn't make sense to me.
Here it is...
For a 'Black Friday' sale, everything in a store is 10% off the original price. If Ana purchased an item that was marked with a sale price of $40, what was the original price?
My teacher said the answer was $44.44 but I don't understand how she got that, can someone help please?
For a 'Black Friday' sale, everything in a store is 10% off the original price. If Ana purchased an item that was marked with a sale price of $40, what was the original price?
My teacher said the answer was $44.44 but I don't understand how she got that, can someone help please?
1 answer:
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Here is your answer
B. (12,30)
REASON:
Given,
.......(i)
.......(ii)
Putting the value of y from eq.i in eq.ii we get
Putting x=12 in eq.i we get
So,
Hence answer is (12,30) in which x=12 and y=30
HOPE IT IS USEFUL
Answer:
a) Let Kim's age be k, then Kim's sister's age is k/2
k+=24
b) k+=24
1k=24
k=16
=8
Kim's age is 16 while her sister's age is 8.