Question

Annie and david can complete work in 28 and 84 days ,how long botj will complete the task if they work together

Answer 1

Answer:

LCM of 28 and 84 = 84

efficiency = 3, 1

so, both will complete the work in = 84/4 = 21 days ...

Answer 2

$\huge\bf{Answer:-}$

yes

Step-by-step explanation:

Refer the attachment.