Answer: 1) 2 r+ 1.60 b = 10
2) r(b) = 5 - 0.8 b
3) b(r) = 1/0.8(5 - r)
Step-by-step explanation:
Here, b be the number of pounds of beans Lin buys and (r) be the number of pounds of rice she buys when spending all her money on the meal.
Brown rice costs $2 per pound, and beans cost $1.60 per pound. Lin has $10 to spend on these items.
Therefore, 2 r+ 1.60 b = 10
Which is the required expression.
Now for making b as independent, we can write the above expression,
2 r = 10 - 1.60 b
r(b) = 5 - 0.8 b
For making r as independent we can write the above expression,
1.60 b = 10 - 2 r
b(r) = 1/1.6(10 - 2 r)= 1/0.8(5 - r)
