bananas cost $1.50 per pound, and guavas cost $3.00 per pound. kiran spends $12 on fruit to for a breakfast his family is hosting. let b be the number of pounds of bananas kiran buys and g be the number of pounds of guavas he buys. a. write an equation relating the two variables. b. rearrange the equation so b is the independent variable. c. rearrange the equation so g is the independent variable.

let
b -------> the number of pounds of bananas
g -------> the number of pounds of guavas

we know that
$1.5b+$3g=$12

Part a) write an equation relating the two variables

the answer Part a) is
1.5b+3g=12

Part b) rearrange the equation so b is the independent variable
1.5b+3g=12---------> clear variable g
3g=12-1.5b
g=(12/3)-(1.5/3)b------> g=4-0.5b

the answer Part b) is
g=4-0.5b   ( b is the independent variable)

Part c) rearrange the equation so g is the independent variable
1.5b+3g=12---------> clear variable b
1.5b=12-3g
b=(12/1.5)-(3/1.5)g--------> b=8-2g

the answer Part c) is 
b=8-2g    ( g is the independent variable)