Word Problem (Weight)

Question

John made a blanket, which weighed 2.3 kg. He used item A, with the price per kilo of 512 and item B, with the price per kilo of 136. Total price of the items would be 594.80. What is the item A;s, and B;s weight in grams.

Answer 1

Amount of $A$ we'll call $A$.

Amount of $B$ we'll call $B$.

$A + B = 2.3$ (1)

$512A + 136B = 594.8$ (2)

Subtract $136$ (1) from (2).

$376A = 282$

$A = 0.75$

Substitute in to find $B$.