Lizzy: Fran baked 50 red macaroons and 40 green macarons. How many macaroons will remain if Fran ate 15 green macaroons and twice as many red macaroons as green macaroons?.
Me: Hmmm, let me think. I think this is the detailed solution:
After eating 15 green macaroons, the number is reduced to 40 green macaroons - 15 green macaroons = 25 green macaroons. If Fran ate 15 green macaroons, he also ate 2 red / green * 15 green macaroons = 30 red macaroons. The total number of red macaroons remaining is 50 red macaroons - 30 red macaroons = 20 red macaroons. The total number of macaroons Fran has left are 20 macaroons + 25 macaroons = 45 macaroons. Final answer: 45.