 
 <prompt> Mary, Jess, da Christina su ke so ya yi hira da kayan aiki da balloons a cikin dakin shan party. Kowane mutum ya yi hira da kayan aiki a kananan tsawon minti, kuma suna da minti sha biyu don su yi hira da kayan aiki. Mary ta yi hira da kayan aiki 10 a minti, Jess ta yi hira da kayan aiki 7 a minti da Christina ta zo minti 15 a gaba kuma ta yi hira da kayan aiki 4 a minti. Me ya sa suke yi hira da kayan aiki kafin su kammala lokaci? <response>: Mary zata kama jumla na 10 balloons/minute x 30 minutes = 300 balloons
Jess zata kama jumla na 7 balloons/minute x 30 minutes = 210 balloons
Christina zata kama jumla na 4 balloons/minute x 15 minutes = 60 balloons
Idan muka jumlar balloons dukkan, za'a kama 300 balloons + 210 balloons + 60 balloons = 570 balloons

Javaba zai samu 570. 