Answer:
31 hours
Step-by-step explanation:
Please see that the monthly pay if the number of training hours is 30 , is $1550
and Monthly pay if the number of training hours is 40 is $1700
Hence by increasing 10 number of hours , it is increasing an amount of $150
Hence 15 rupees of one hour.
Hence by adding one more hour, payment of 15 , will be added to $1550 i.e. $1565. Which is our answer as per the equation.
Hence no. of hours for earning $1565 is 31 hours
