 <translate> 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: <yor> Gbé ìbéèrè yìí yẹ̀ wò. Maci ń wéwèé fún ọdún iléèwé tuntun, ó sì lọ sí ṣọ́ọ̀bù láti lọ ra ọ̀dà. Ó nílò bébà buluu mẹ́wàá àti bébà pupa mẹ́ẹ̀ẹ́dógún. Bí bébà aláwọ̀ búlúù kan bá ń ná dọ́là mẹ́wàá, tí bébà aláwọ̀ pupa sì ń ná ìlọ́po méjì bébà aláwọ̀ búlúù náà, owó wo ni Maci san fún bébà náà? Bí ìdáhùn bá jẹ "4" ṣàlàyé ìdí rẹ̀: 