 
 <prompt> Loisa ta so ya sami tablet da aka bude ta da $450. Saboda ba ta da kuɗi cikin haka, duk wanda ya ba ta shi ne suka bayar da wata shanuwa don 12 ga watan. Ta zama ayyana $100 a matsayin ayyana, ta yi ayyana $40 don watan uku; sannan ta yi ayyana $35 don watan uku na gaba; sannan ta yi ayyana $30 don watan uku na ƙarshe. Me ya kamata Loisa ta kasancewa idan ta sami tablet a kuɗi a gaba a matsayin ayyana? <response>: Loisa zata biya jumla na $40 x 4 = $160 don farko na watan 4.
Zata biya jumla na $35 x 4 = $140 don watan 4 mai zuwa.
Kuma zata biya jumla na $30 x 4 = $120 don watan 4 na farko.
Sannan ta zata biya jumla na $100 + $160 + $140 + $120 = $520 don shekaru 12 kowace wata.
Sannan, Loisa zata iya gyara $520 - $450 = $70 idan ta samu kayan aiki a kudi.

Sakon zai kasance 70. 