Question

a does 20% less work done b. if a can finish a piece of work in
$7 \times \frac{1}{2}$
hours, then, in how many hours can B finish it? ​

Answer 1

Step-by-step explanation:

20% of 7.5 is 1.5

so it decreases by 1.5. Therefore 7.5 - 1.5 is 6