Some stickers are packed into exactly packets of 6.
If the stickers are repacked into packets of 16,
there are 5 less packets.
- How many packets are there?
- How many stickers are there?
|
Packets of 6 |
Packets of 16 |
Number |
1 u |
1 u - 5 |
Value |
6 |
16 |
Total value |
6 u |
16(1 u - 5) = 16 u - 80 |
(a)
Let the number of packets of 6 be 1 u.
Number of stickers in packets of 6
= 1 u x 6
= 6 u
Number of stickers in packets of 16
= 16 x (1 u - 5)
= 16 u - 80
6 u = 16 u - 80
16 u - 6 u = 80
10 u = 80
1 u = 80 ÷ 10 = 8
Number of packets of 6 = 8
(b)
Number of stickers
= 6 u
= 6 x 8
= 48
Answer(s): (a) 8; (b) 48