Two kinds of coffee are blended to produce a mixture of 25 kilograms worth $52 a kilogram. The costs of the two kinds of coffee are $40 and $56 a kilogram. Find how many kilograms of each kind are blended. last probleeem! NEED HELP! :)

Question

anonymous · Answer

i need the solution. :)

amistre64 · Answer

ax + by = tz;  a+b=t; a=(t-b)

(t-b)x + by = tz

tx -bx +by = tz

-bx+by = tz-tx

b(y-x) = t(z-x)

b@y = t(z-x)/(y-x)

amistre64 · Answer

t=25 kilograms worth 
z=$52 a kilogram. 

x=$40 and 
y=$56 a kilogram.

b@56 = 25(52-40)/(56-40)

amistre64 · Answer

18.75 @ 56; which leaves 6.25@40; but dbl chk it

anonymous · Answer

amistre try this http://openstudy.com/groups/mathematics#/groups/mathematics/updates/4e2186aa0b8ba00f8f003634

anonymous · Answer

ohhh. thanks. :)