It's D, you have to divide 1.54$ by 2.2pounds, then you will get the price for 1 pound. And then multiply the price (0,7$) by 5,7 pounds
Answer:
Tess is correct
Step-by-step explanation:
First off, to find out the new discounted price without the sales tax, you multiply $24.50 by 15% (0.15). This gives you $3.68. You then subtract the $3.68 from $24.50. You get $20.82. To find the total with sales tax you then multiply the $20.82 by 10% (0.1). You add the discounted price with the sales tax and get the conclusion that they have enough money for the book.
Simple. 1.5 as a fraction is 1 & 1/2. If you know how to make fractions decimals, you're set.
Rounding is based off of the digit following the place we are rounding to
there are several possibilities for a number when we are "reverse rounding"
the original value could have been
3.73... and was rounded up
or
it could have been 3.74 but rounded down
all we do is identify the range of possible numbers and pick one as our answer
the lowest possible value would be 3.735...
the highest possible value would be 3.744...
so just pick any number falling within that range