Adam has some $10-notes and some $20-notes that add up to $680.
There are 2 less $20-notes than $10-notes.
- What is the value of the extra 2 $10-notes?
- What is the value of one $10-note and one $20-note?
- How many $20 notes are there?
- How many $10 notes are there?
(a)
Value of the extra 2 $10 notes
= 2 x 10
= $20
(b)
Value of one $10-note and one $20-note
= 10 + 20
= $30
(c)
Number of $20 notes
= (680 - 20) ÷ 30
= 660 ÷ 30
= 22
(d)
Number of $10 notes
= 22 + 2
= 24
Answer(s): (a) $20; (b) $30; (c) 22; (d) 24