A, B and C can finish a task in 42 days, 84 days and 28 days, respectively. A started the work, B joined him after 3 Days. If C joined them after 5 days from the beginning, then for how many days did A work till the completion of the task?

Question

KK LL · Answer

17 days

Naga Venkateswararao Veeranki · Answer

x/42+(x-3)/84+(x-5)/28=1:
2x+x-3+3x-15=84:
6x-18=84:
6x=102:
x=17

A, B and C can finish a task in 42 days, 84 days and 28 days, respectively. A started the work, B joined him after 3 Days. If C joined them after 5 days from the beginning, then for how many days did A work till the completion of the task?

Join CAT 2026 course by 5-Time CAT 100%iler

Download resources