1.)the ratio of the number of apples to oranges is 5:4. if there is a total of 135 apples and oranges, how many apples are there?
2.)mrs.jones is 4 times as old as her son. the sum of their ages is 50 years old. how old was mrs.jones when her son was born
3.)mary sold x candybars for $3 each. she received less than $150 from the sale. find the greatest possible number of candybars she sold.