A and B can finish a piece of work in 20 days and 30 days respectively. Both work on alternate days. In how many days will the work be completed when A starts the work?
Both work alternately on alternate days. A starts first. Thus, 5 units can be worked in 2 days, so time taken to work 60 units = 60/5 =12 Days.
9999² + 1111² =?
641.5 + 72 × 8 = ? × 4
72 + 122 - 25% of 600 = ?
∛157464 =?
6 0 - 20 [8 + 12 {8-8 (20-12)+20}-40] ÷ 16 =?
(49 x ?) / 3.5 + 389 = 627
2850 ÷ 2.5 - ? × 42 = 300
135.37 – 50.24 + 629.09 – 199.50 = ? – 214.68 + 42.65
1885 ÷ 64.98 + 7.29 + ? = 69.09
? ÷ 8 = 2048 ÷ 64
