20% = 0.20
50 * 0.20 = $10 discount
50 - 10 = 40
The price after 20% discount is $40
Answer:
20 books
Step-by-step explanation:
given that the shelf can hold 25 1/2 lbs (i.e 25.5 lbs), and that each book weighs 1 1/4 ln (i.e 1.25 lbs)
number of books which the shelf can hold
= weight that the shelf can hold ÷ weight of each book
= 25.5 ÷ 1.25
= 20.4 books
because having 0.4 of a book (i.e part of a book) would not be very feasable, we have to round the number of books down to the nearest whole number)
20.4 books rounded down to nearest whole number = 20 books (answer)
5.7 pints would be water
3/10 of 19 pints are water
19*(3/10) = 5.7
X equals 4 because 2 times 2 equals 4 and then 4 times 4 =16
