Lux Investing

oto invest$1400 part 5% and part 8% her total income from both invest was$100.Find amount she invest each rate

Public Comments

1. (1400*x*0.05)+(1400*(1-x)*0.08)=100 70x + 112 - 112x = 100 x = 12/42 0.05 Amount = 12/42 * 1400 = $400 0.08 Amount = 1000-400 = $1000 Oto makes $20 from the 0.05% investment and $80 from the other.