Jorge bought a phone card that has 120 min of phone use on it. The first week, he used 37.7 min. The second week, he used 12.7 min. The third and fourth weeks, he used 31.9 min each week. How many minutes of phone use does Jorge have left on the card?

I NEED HELP ASAP I HAVE A TESTED THAT I CAN'T FINSH :(