Mateo has already swum 4/5 of the 2,000 meters he is swimming today. If he continues swimming at a pace of 3/4 ofa meter per second, which expression shows the amount of time it will take him to swim the remaining distance?
a) 2000* 4/5 * 3/4
b) 2000* 4/5 + 3/4
c) 2000* 1/5 * 3/4
d) 2000* 1/5 + 3/4