Alice o mogolo go feta Beth ka dingwaga di le 7, Beth ene o mogolo go feta Erica ka dingwaga di le 5.  Go farologana ka dingwaga di le kae magareng ga Alice le Erica, fa Erica a na le dingwaga di le 30? 

Mark has $50 in his bank account. He earns $10 per day at his work. If he wants to buy a bike that costs $300, how many days does Mark have to save his money?
Beth o na le dingwaga di le 30+5 = <<30+5=35>>35.
Alice o na le dingwaga di le 35+7 = <<35+7=42>>42.
Phapano ya dingwaga tsa ga Alice le Erica ke  42-30 = <<42-30=12>>12 dingwaga.
#### 12

Mike has $50 in his bank account, so the amount he needs to save to reach the bike goal is $300 - $50 = $250
He earns $10 per day, so $250 / $10/day = <<250/10=25>>25 days
#### 25