Question

elsa and liz thought they could fix dinner in 45 minutes ,when they were halfway done, 0.4 of an hour had passed,did they fix dinner in 45 minutes

Answer 1

no, they fixed dinner in about 48 minutes.

Answer 2

1 hour=60 minutes
0.4*60=24
They fix dinner in 24 minutes, so they did fix dinner in 45 minutes.