A forest has 5040 trees. The trees are beech or maple.
number of beech : number of maple = 3.2:1
a) What fraction of the trees are beech?
Give your answer as a fraction in its simplest form.

For a read-a-thon, jay and odhràn each started reading a book at the same time and continued reading for several hours. jay's book had 278 pages, and he read 55 pages per hour. odhràn's book had 238 pages, and he read 45 pages per hour. after how many hours did they have the same number of pages left, and how many pages were left?

Suppose a pendulum is l meters long. the time, t,in seconds that it tales to swing back and forth once is given by t=2.01

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.