Here, for example, are my answers:
Set 1
1a) On average, which would you prefer  $15 now, or $16 in one month's time? $15 now
1b) On average, which would you prefer  $15 now, or $160 in one month's time? $160 in a month
2a) On average, which would you prefer  $15 now, or $20 in one year? $15 now
2b) On average, which would you prefer  $15 now, or $200 in one year? $200 in a year
3a) On average, which would you prefer  $15 now, or $40 in a decade? $15 now
3b) On average, which would you prefer  $15 now, or $400 in a decade? $400 in a decade
Set 2
1a) On average, which would you prefer  $15,000 now, or $16,000 in one month's time? $15,000 now
1b) On average, which would you prefer  $15,000 now, or $160,000 in one month's time? $160,000 in a month
2a) On average, which would you prefer  $15,000 now, or $20,000 in one year? $15,000 now
2b) On average, which would you prefer  $15,000 now, or $2,000,000 in one year? $2,000,000 in a year
3a) On average, which would you prefer  $15,000 now, or $40,000 in a decade? $15,000 now
3b) On average, which would you prefer  $15,000 now, or $4,000,000 in a decade? $4,000,000 in a decade
