Three kinds of tea at $1160, $1460 and $1540 per kg are mixed in the ratio 2:3:5. What is the mixture worth per kg

Answer 1

If the final value per kg is x, then you need
2*1160 + 3*1460 + 5*1540 = (2+3+5)x
If this is not clear, then read up on weighted averages

Answer 2

1160(2x) + 1460(3x) + 1540(5x) = price(10x)
divide each term by x and evaluate
2320+4380+7700 = 10(price)
price = ...... /10 = ....

Answer 3

1st
#1160×2
=#2320
2nd
#1460×3
=#4380
3rd
#1540×5
=#7700
Mixture worth per kg
=#2320+#4380+#7700/2+3+5
=#14400/10
=#1440