Question13. Ricardo spent half his allowance on supplies, then \$5.25 on a snack, leaving him with \$22.50. Find his allowance$a$.
14. Liza earned money caring for a pet, spent \$1.95 on a drink, \$30 on a concert ticket, \$7.20 on a ring, and has \$38.50 left. Find$m$.
15. Henry bought dog treats, set aside 10, and gave 15 dogs 4 treats each. Find the total treats $t$ in the package.