a and b can weed a certain field in6and12 hours respectively.working together in how many hours will they weed the field
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- A can weed the field in 6 hours
- B can weed the field in 12 hours
- Hours in which they can weed the field while working together
- Let 'h' be the hours in which they can weed the field while working together
: ➜
: ➜
: ➜
: ➜
: ➜
: ➜
: ➜
As we assumed that if they work together for 'h' hours then they would finish the weeding process
So,
: ➜
: ➜ 1 × h = 4 × 1
: : ➨ h = 4
- Hence they could weed the field in 4 hours while working together
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