 
<translate> Ka yi la'akari da wannan tambayar. Maci yana shirin sabuwar shekara ta makaranta kuma ya tafi shagon don sayen fensir. Tana bukatar alkalami shuɗi goma da ja goma sha biyar. Idan fensir mai launin shuɗi yana da tsada goma a kowace kuma fensir ja yana da tsada sau biyu kamar yadda fensir mai launin shuɗi yake, nawa ne Maci ya biya don fensir? Idan amsar ita ce '4'; bayyana dalilin: <eng> Consider the question. Maci is planning for the new school year and goes to the store to buy pens. She needs ten blue pens and 15 red pens. If a blue pen costs ten cents each and a red pen costs twice as much as the blue pen, how much money does Maci pay for the pens?
 If the answer is '4'; explain the reasoning: 