Answer:
A) 34%
Step-by-step explanation:
Lets say that the price of this object was $100.
Then, we know that each week the price is reducing by 10%, so therefore, we take 10% of $100, and we have $10
If we subtract that from $100, ($100-$10), we find that the price has come down to $90 after the first reduction in the first week. We will now do this process three more times to get to the four weeks total.
10% of $90 dollars is 9 dollars, so therefore the price reduces to $90-$9, $81 after the second reduction in the second week.
Then we take 10% of $81 and then get $8.1. We subtract that from $81 and get $72.9
Then for the final reduction in the fourth week, we take 10% of $72.9, and we get $7.29. Take that from $72.9, and you get $65.61, which we can round to $66.
The question however asks how much was the approximate percantage in decresse over the 4 weeks. We see that the object went from $100 to $66, which is $34 decrease.
Now we simply find what percantage of $100 is $34, and that is 34%, which gives you option A.
Hope this helped.
