Need with this been trying to solve it x/3ytimes3xy/5dividedby4y^2/5x^2 fractions,

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.