Let A take a days and B take a+24 days.
Together: a1+a+241=22.51=452.
a(a+24)2a+24=452
45(2a+24)=2a(a+24)
90a+1080=2a2+48a
a2−21a−540=0
(a−36)(a+15)=0⇒a=36.
Mason A alone completes the work in 36 days.
A building construction work can be completed by two masons A and B together in 22.5 days. Mason A alone can complete the construction work in 24 days less than mason B alone. Then mason A alone will complete the construction work in :
Held on 23 Jan 2026 · Verified 6 Jul 2026.
30 days
36 days
24 days
42 days
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