PSLE
Julie had rubik's cubes for sale. In the morning, she sold ¹₈ of the rubik's cubes. In the afternoon, she sold ²₇ of the remaining rubik's cubes. After that, there were 95 rubik's cubes left. How many rubik's cubes did Julie have at first?
Fraction of rubik's cubes left after selling in the morning
= 1 - ¹₈
= ⁷₈

Fraction of the remaining rubik's cubes after selling in the afternoon
= 1 - ²₇
= ⁵₇

⁵₇ of remaining rubik's cubes = 95
¹₇ of remaining rubik's cubes = 95 ÷ 5 = 19
⁷₇ of remaining rubik's cubes = 7 x 19 = 133

⁷₈ of total rubik's cubes = 133
¹₈ of the total rubik's cubes = 133 ÷ 7 = 19
⁸₈ of the total rubik's cubes = 8 x 19 = 152

Number of rubik's cubes at first = 152

Answer(s): 152