 
 <prompt> A store sells pencils and erasers. It has a rule that for every pencil you buy, you must buy 2 erasers which cost 1/2 the price of the pencils. If they sold 20 pencils and earned $80, how much do erasers cost?

Magazin ya ba pencils da kuma erasers. Akwai kwamfuta cewa don kullum za ka samu pencils daya, za ka samu erasers biyu da suka fi 1/2 da damar pencils. Idan suka ba 20 pencils da suka samu $80, shin erasers sun fi? <response>: Sun kawo 40 erasers saboda 20 x 2 = 40
Saboda haka 20(Kudin Allo) + (1/2)(40 x Kudin Allo) = 80
Saboda haka 40(Kudin Allo) = 80
Saboda haka (Kudin Allo) ya zama 2 saboda 80 / 40 = 2
An eraser yana da sauran $1 saboda 2 / 2 = 1

Javobi zai zama 1. 