Answer:
Holly and Ruby have 375 beads
Explanation:
Let the total beads = t
Ruby's beads before exchange
= total beads - Holly's beads
= t - 240
Percentage of increment = 17%


17 × (t-240) = 23 × 100
17t - 4080 = 2300
17t = 2300 + 4080
t = 6380 ÷ 17
≈ 375 beads