Answer :
John earned $3.45
$0.05 (how much he earns for returning 1 can) x 39 cans = $1.95 dollars in total
$0.10 (how much he earns for returning 1 glass bottle) x 15 glass bottles = $1.50 dollars in total
$1.50 (glass bottle total) + $1.95 (cans total) = $3.45 dollars in total
$0.05 (how much he earns for returning 1 can) x 39 cans = $1.95 dollars in total
$0.10 (how much he earns for returning 1 glass bottle) x 15 glass bottles = $1.50 dollars in total
$1.50 (glass bottle total) + $1.95 (cans total) = $3.45 dollars in total