Answer:
96 people were teenagers
Step-by-step explanation:
2400*4%= 96
Answer:
55% and 190%
Step-by-step explanation:
33/60×100=55
114/60×100=190
So the larger number is x, and the smaller number is y
7y=x
3x=7+4y
(So plug in the 7y=x information into the second equation)
3(7y)=7+4y
21y=7+4y
17y=7
y=7/17
Answer:
4
Step-by-step explanation:
4=x
5x+7 =27
27=27
:(((
Answer:
175 pages
Step-by-step explanation:
Let's call 'd' the number of days before the deadline, and 'n' the total number of pages of the book.
We have the following equations:
(1) 
--> if we multiply the number of pages per day (25) times the number of days (d), we get the total number of pages of the book (n)
(2) 
--> he reads 8 pages more per day (so, 25+8), for a number of days equal to (d-2) (d is the deadline), and he reads a total of n-10 pages (because only 10 are left)
We can substitute (1) into (2) and we find:
So, the deadline is 7 days, and from eq.(1) we find the number of pages in the book:
