SOLUTION: In the barn there are 100 kg wheat and rye, rye is 10%. How many kg of wheat should be added which the content of rye to be 4%?

Question 752538: In the barn there are 100 kg wheat and rye, rye is 10%. How many kg of wheat should be added which the content of rye to be 4%?
Answer by malglu(63) (Show Source): You can put this solution on YOUR website!
there is now 10kg of rye, this will not chankge. we want to add x kg of wheat to the 100kg of mixed grains we have, so that 4% (4/100) of it will be 10kg of rye
4/100 * (100 +x) = 10
multiply out and reaarange to get 4x=600
x = 150
so we need to add 150kg of wheat
(this gives us 250kg of mixture of which 4% is rye, because 10kg/250kg is 4%)
RELATED QUESTIONS
How much are the wheat rolls and how much are the rye rolls. 4 Wheat rolls + 4 Rye... (answered by TimothyLamb)

a bakery makes a special whole-grain bread using two kinds of flour. whole wheat and rye. (answered by stanbon)

a grain dealer sold to one customer 9th bushels of wheat 3 of corn and 5 of rye for... (answered by math_tutor2020,josgarithmetic)

A baker purchased 13 lb of wheat flour and 10 lb of rye flour for a total cost of $14.10. (answered by josgarithmetic,ikleyn)

Read the problem below. Make a list to help you solve the problem. Ted's Takeout sells (answered by rfer)

Read the problem below. Make a list to help you solve the problem. Ted's Takeout sells (answered by Fombitz)

a baker purchased 12 lb of wheat flour and 15 lb of rye flour for a total cost of 18.30.... (answered by pedjajov)

A baker purchased 15 lb of wheat flour and 12 lb of rye flour for a total cost of $17.55. (answered by josgarithmetic)

A baker purchased 11 lb of wheat flour and 10 lb of rye flour for a total cost of $14.65. (answered by greenestamps)