Iwant to buy a book that is on sale with a 50% discount. if the sales price is $25. what was the original price?

The original price is $50.

Step-by-step explanation:

First, convert the 50% to a real mathematical number. For percents, this is always done by dividing the 50% by 100%, or 50% / 100% = 0.500.

Second, find out what 50% of $50 is. This is the amount of the sale discount. This is always found by multiplying 0.500 by the item's cost $50, like this:

0.500 x $50 = $25.00.

So for this sale, you'll save $25.00 on this item.

This means, the cost of the item to you is

$50 - $25.00 = $25.00.

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where's the diagrams?

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.