Answer:
b
Explanation:
sum the parts of the ratio , 5 + 10 = 15 parts
divide the amount by 15 to find the value of one part of the ratio
$540 ÷ 15 = $36 ← value of 1 part of the ratio , then
5 parts = 5 × $36 = $180
the smallest share , that is 5 parts is $180