Question

B is twice as fast as A.A can complete a job in 36 days , how long will it take for both A and B together to complete the same job​

Answer 1

$1 \div 36 + 1 \div 18 \\ = 1 + 2 \div 36 \\ = 3 \div 36 \\ = 1 \div 12 \\ = 12days$

Answer 2

Answer:

12 days

Step-by-step explanation:

a=1/36

b=1/18

= 1/36+1/18

=1+2/36

=3/36

=1/12

=12 days