Mr
Toh is paid $2720 to work 170 hours a month, excluding overtime. He is
paid twice as much each hour when he works overtime. Mr Toh received
$4000 in September. How many hours of overtime did he work in September?
3.
Rate per hour = 2720/170 = 16 $ per hour
$2720 / 170 = $16 / h
Mr Toh is paid = $16 / h
He is paid $2720 to work 170 hours a month, more than this is overtime.
He is paid twice as much each hour when he works overtime.
2 • $16 / h = $32 / h
He is paid = $32 / h when he works overtime.
( 4000 - 2720 ) / 32 =
1280 / 32 = 40
He work 40 hours of overtime in September.
Check result.
270 • $16 + 40 • $32 = $2720 + $1280 = $4000