if liam buys 5 tacos (each costing $3.50)
$3.50 x 5 = $17.50
this means he must now take $17.50 from his total $30
$30 - $17.50 = $12.50
he now has $12.50 to spend on drinks
each drink cost $2 and so you must do $12.50 divided by $2 to determine how many drinks liam can buy.
$12.50 divided by $2 = 6 (with $0.50 left over)
therefore, liam can buy 6 drinks, 5 tacos and still have $0.50 change
