Atom asked:
I cannot for the life of me figure out what the question is trying to ask.
“Blah Blah Phone Company charges $2 per minute for calls to anywhere in S. America. Vencito called his mother in Peru. They talked for under a quarter of an hour. When he called his sister in Brazil, they spoke for just over ten minutes.”
“The bill for both calls was $49.20. To the nearest tenth of a minute, how long could each call have been?”
Sorry, she is in 5th grade. Still…