Ajay is on the swim team. He improved his time on the 50-yard freestyle from 32 seconds to 31 seconds.
What's the percent decrease in his time?
3.125%
3.23%
1.03%
3.2%

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.