Adam spends ¹₆ of his money on some beads.
He spends ²₃ of his money on some stickers and
³₅ of the remaining money on some marbles.
In the end, he has $12 left.

1. How much does he spend on the beads?
2. How much does he spend on the stickers?
3. How much does he spend on the marbles?
4. How much does he spend altogether?

(a)
Amount left after Adam spends on beads and stickers
= 1 - ¹₆ - ²₃
= 1 - ¹₆ - ⁴₆
= ¹₆

Make the numerators the same.
¹₆ of the amount = ⁵₅ of the remaining amount
⁵₃₀ of the amount = ⁵₅ of the remaining amount

Amount Adam spends on beads = ¹₆ = ⁵₃₀ 
Amount Adam spends on stickers = ²₃ = ²⁰₃₀

Amount that he has left
= 5 u - 3 u
= 2 u

2 u = 12

1 u = 12 ÷ 2 = 6

Amount that he spends on the beads
= 5 u
= 5 x 6
= $30

(b)
Amount that he spends on the stickers
= 20 u
= 20 x 6
= $120

(c)
Amount that he spends on the marbles
= 3 u
= 3 x 6
= $18

(d)
Amount that he spends altogether
= 30 + 120 + 18
= $168

Answer(s): (a) $30; (b) $120; (c) $18; (d) $168