 
<translate> Johnny ya sayi fakiti 15, kuma kowane fakiti na yau da kullum yana da fensir ja daya. Ya kamata ya sami 15 * 1 = 15 jan fensir. 3 daga cikin fakitin suna da karin fensir masu launin ja 2, don haka akwai 3 * 2 = 6 karin fensir ja. A cikin duka, Johnny yana da 15 + 6 = 21 jan fensir mai launi. Amsar ita ce 21. <eng> Johnny bought 15 packs, and every normal pack has 1 red pencil. He should have 15 * 1 = 15 red pencils. 3 of the packs have 2 extra red colored pencils, so there are 3 * 2 = 6 extra red pencils. In total, Johnny has 15 + 6 = 21 red colored pencils. So the answer is 21. 