Final answer:
To calculate how many songs customers downloaded this year after a 42% decrease, multiply 5,250 by 0.42 to find the decrease amount and subtract it from 5,250. The result is 3,045 songs, so option b) is correct.
Step-by-step explanation:
The problem given is a percentage decrease problem in which we need to find the new number of songs downloaded this year after a 42% decrease from last year's number. The calculation needs to be performed as follows:
- First, find the amount of decrease by calculating 42% of 5,250 songs, which were downloaded last year.
- Then, subtract this decrease from the original number of songs to find out how many songs were downloaded this year.
Step 1: Calculate 42% of 5,250. 42% is the same as 0.42 in decimal form, so:
0.42 × 5,250 = 2,205
Step 2: Subtract the decrease from last year's total downloads to find this year's total downloads.
5,250 - 2,205 = 3,045
Therefore, this year, customers downloaded 3,045 songs, which makes option b) the correct answer.