1.

1). 405.12). 450.63). 835.64). 658.5

Answer»

Given,

40% of m = N

⇒ (40/100)m = n

⇒ 2m/5 = n

⇒ 2m = 5n

60% of n = 180

⇒ (60/100) × n = 180

3N/5 = 180

⇒ 3n = 900

n = 300

2m = 5 × 300

m = 1500/2 = 750

(m - n) = (750 - 300) = 450

85% of (m - n) = (85/100) × (450) = 382.5



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