If 30% of 1520 + 40% of 800 = x % of 5000, find the value of x.

Question: If 30% of 1520 + 40% of 800 = x % of 5000, find the value of x.

Solution:
30% of 1520 + 40% of 800 = x% of 5000
⇒ (30/100) × 1520 + (40/100) × 800 = (x/100) × 5000
⇒ 456 + 320 = 50x
⇒ 50x = 776
⇒ x = 776/50
∴ x = 15.52