Question

29. Martin has some dollar notes. 20% of the notes are $10 notes, 40% of
the remainder are $5 notes and the rest are $2 notes. He has a total
of $1026. How many notes does Martin have altogether?

Answer 1

Answer:

• 225 notes

Step-by-step explanation:

Let the number of notes is x.

20% of notes is:

• 0.2x

40% of the remainder is:

• 40% of 0.8x, so it is
• 0.8x*0.4 =
• 0.32x

Remaining notes are:

• x - 0.2x - 0.32x =
• 0.48x

Total of the notes:

• 0.2x*10 + 0.32x*5 + 0.48x*2 = 1026
• 2x + 1.6x + 0.96x = 1026
• 4.56x = 1026
• x = 1026/4.56
• x = 225