John sublets his apartment to 3 people who each pay $400 per month.  He rents the apartment for $900 a month.  How much profit does he make in a year?
Ҷон хонаи худро ба 3 нафар иҷора медиҳад, ки ҳар кадом $400 дар як моҳ пардохт мекунанд. Вай хонаи худро барои $900 дар як моҳ иҷора медиҳад. Вай дар як сол чанд фоида мекунад?
How much do the tenants pay? ** He gets 3*$400=$<<3*400=1200>>1200 per month
How much does he get in a year? ** So he gets 1200*12=$<<1200*12=14400>>14,400 per year
How much does he pay in a year? ** So he pays 12*900=$<<12*900=10800>>10800 a year
How much profit does he make in a year? ** That means his profit is 14400-10800=$<<14400-10800=3600>>3600 per year
#### 3600
How much do the tenants pay? ** Вай 3*$400=$<<3*400=1200>>1200 дар як моҳ мегирад  
How much does he get in a year? ** Пас вай 1200*12=$<<1200*12=14400>>14,400 дар як сол мегирад  
How much does he pay in a year? ** Пас вай 12*900=$<<12*900=10800>>10800 дар як сол пардохт мекунад  
How much profit does he make in a year? ** Ин маънои онро дорад, ки фоидааш 14400-10800=$<<14400-10800=3600>>3600 дар як сол аст  
#### 3600