Question 993865

How many kg of wheat selling at Rs. 5.20 per kg should be mixed with wheat selling at 4.40 per kg to make a mixture of 30 kg selling at Rs. 144.80 ?
<pre>Let amount of Rs. 5.20 wheat to mix, be F
Then amount of Rs. 4.40 wheat to mix = 30 - F
We then get the equation: 5.2F + 4.4(30 - F) = 144.8
5.2F + 132 - 4.4F = 144.8
5.2F - 4.4F = 144.8 - 132
.8F = 12.8
F, or amount of Rs. 5.20-wheat to mix = {{{12.8/.8}}}, or {{{highlight_green(16)}}} kg
Amount of Rs.-4.40 wheat to mix: 30 - 16, or {{{highlight_green(14)}}} kg