How would you find the number, 3/7 of which is equal to t? (let's say it was any number, just need the equation)

What is the sum of these mixed numbers 2 1/8 + 4 3/8

Student price tickets to a movie are $1 and non student tickets are $2. 350 tickets are sold and the total amount made is $450. how many non student tickets were sold ? a) 100 b) 150 c) 200 d)250

Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1