Question

A coin collector is able to collect 5 coins each day. The collector has 5 coins on the first day, 10 on the second, 15 on the third day, and so on. Which expression represents the number of coins the collector has after d days?

a) d + 5

b) 5 d

c) d5

d) 5d

Answer 1

The number of coins the collector has after d days can be calculated by multiplying the number of coins collected each day (5) by the number of days (d). Therefore, the correct expression is:

d * 5

This simplifies to:

5d