Question

How many kg of bleached flour which costs $8/kg must be added to 14 kg of unbleached flour which costs $5/kg to make baking flour which costs $6/kg?

Answer 1

Answer:

• 7 kg

Step-by-step explanation:

Let the added flour is x kg.

We have following equation showing the total amount:

• 8x + 14*5 = (14 + x)*6
• 8x + 70 = 6x + 84
• 8x - 6x = 84 - 70
• 2x = 14
• x = 7

Answer 2

• Cost of unbleached flour=14(5)=70

Now

Let required bleached flour be x kg

Then

$\sf\longmapsto 8x+70=6x$

$\sf\longmapsto 8x-6x=70$

$\sf\longmapsto 2x=70$

$\sf\longmapsto x=35kg$