Level 3
Ethan had 40% as many beads as Ben. After Ethan and Ben bought another 50 beads and 15 beads respectively, Ethan had 50% more beads than Ben. How many beads did Ethan have at first?

Level 3
The total volume of water in Watering Can A, Watering Can B and Watering Can C was 205 mℓ. I poured out half the volume of water from Watering Can A, doubled the amount of water in Watering Can B and added 55 mℓ of water into Watering Can C. The ratio of the volume of water in Watering Can A to Watering Can B to Watering Can C is now 5 : 4 : 8. Find the total volume of water in the three watering cans now.

Level 3
Mrs. Ben made 248 more white chocolate cookies than dark chocolate cookies. After she gave away ⁵₇ of the white chocolate cookies and ¹₃ of the dark chocolate cookies, there were an equal number of white chocolate cookies and dark chocolate cookies left. How many white chocolate cookies did she give away?

Level 3
Ming Huat had 255 watermelons and 240 oranges at first. He used ³₅ of the watermelons and ³₄ of the oranges. He then bought some more oranges. In the end, ¹₈ of the fruits he had left were watermelons. How many oranges did he buy?

Level 3
A shop had 30 violins and some guitars. During a sale. ¹₃ of the violins and ¹₅ of the guitars were sold. 64 guitars were left unsold.

1. How many violins were sold?
2. How many violins and guitars were sold altogether?