A valuable watch has an original price of $x. It is sold for $5304 after its original price has been increased by 2% and then by 4%. Find x.
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Answer:

$5416.67

Step-by-step explanation:

Answer:

$5000

Step-by-step explanation:

The original price is x.  I'll leave off the unit ($) until the end.

The final price is 5304 after the two price increases.  We can write this as:

x*(1.02)  [Increase of 2% as indicated by the 1.02 factor]

The second increase is calculated on the basis of this new number, and can be written as:

x(1.02)*(1.04)   [The first increase is increased by 4% by the 1.04 factor]

The final result is $5304, so we can write:

x(1.02)*(1.04) = 5304    [The result of the two increases is 5304]

Rearrange and solve:

x = (5304)/(1.02*1.04)

x = $5000

=================

Check:  Does 5000 become 5304 after two sequential increases of 2% and 4%?

Step 1:  (5000)(1.02)=5100

Step 2:  (5100)*(1.04)= 5304   YES

The original price was $5000.

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