PSLE
Jaslyn had flying saucers for sale. In the morning, she sold ¹₅ of the flying saucers. In the afternoon, she sold ²₉ of the remaining flying saucers. After that, there were 140 flying saucers left. How many flying saucers did Jaslyn have at first?
Fraction of flying saucers left after selling in the morning
= 1 - ¹₅
= ⁴₅

Fraction of the remaining flying saucers after selling in the afternoon
= 1 - ²₉
= ⁷₉

⁷₉ of remaining flying saucers = 140
¹₉ of remaining flying saucers = 140 ÷ 7 = 20
⁹₉ of remaining flying saucers = 9 x 20 = 180

⁴₅ of total flying saucers = 180
¹₅ of the total flying saucers = 180 ÷ 4 = 45
⁵₅ of the total flying saucers = 5 x 45 = 225

Number of flying saucers at first = 225

Answer(s): 225