Respuesta :
Answer: shop 3 and he will pay 97$ for his books.
Explanation:
*% means of and of means to multiply and to discover the percent, we will divide by 100 in the end.
for ex.
10%40
step 1: multiply 10 by 40=400
step 2: divide by 100, so 400/100=4 * if u understand it then u can
10%percent of 40 is 4. skip these 2 steps and get the
Another ex. answer with this trick. for ex.
10%73 10%99= 9.9 the trick is you move the left of
10*73=730 the second digit or in this scenario the underlined 9. you
730/100=7.3 can use this trick for any power of 10 but just remember
10%73=7.3 go left of the second digit depending on how many
zeros the power of 10 has. (this trick is only helpful with
power of 10's.
Shop 1:
step 1: find the percent of each individual prices
10%30=3 10%35=3.5 10%45=4.5
step 2: take 10% of the price and subtract it from the price.
30-3=27 35-3.5=31.5 45-4.5=40.5
step 3: add all the prices
27+31.5+41.5=99
the total price for this shop is $99.
Shop 2:
step 1: add all the prices
30+35+45=110
step 2: if the total price is above 75 then subtract 10.
110-10=100
the total price for this shop is $100.
Shop 3:
step 1: if you have a book that's over 40$ then take 20% out of the book.
20%40=8 then, 40-8=32
step 2: Add all the prices
30+35+32=97
The total price for this shop is $97.
In conclusion, the third shop gives him the books for the cheapest price for $97.
