Question
Two people, A and B, working separately can sanitize a
building in 6 and 10 hours, respectively. They work in stretches of one hour alternately. If A begins at 8 a.m., then when will the work be finished?Solution
A                          B 6                          10               30                        (Total work) 5                           3            -Efficiency Working fashion ® (A, B, A, B.) 2 hours ® 8 units  6 hours ® 24 units 7 hours ® 29 units 8 hours ® 1/ 3 hours ® 30 units Total time ® 22/3 hours  Þ Work will finish.
(5/8 of 480 - 30% of 420)² ÷ (√81 + 25% of 320) = ?
45 % of 180 + √144 * 8 = ?2  + 70 % of 80
(〖(0.5)〗^(1/3) × 〖(1/125)〗^(1/4) × 〖25〗^(1/6) ×〖(6.25)〗^(2/3))/(〖(2.5)〗^(2/3) × 5^(-1/2) × 〖(1/5)〗^(-2)×〖3125�...
34 × 5 × 2 ÷ 6 + 7 × 5 + 13 = (?)× 6 – 754
322 – 182 + 11 × 24 = ?
[5 X {(52 X 5) - 10} + 50 of 20] = ?
What will come in the place of question mark (?) in the given expression?
? = (266 × 276) ÷ (114 × 161) × 17
6612 ÷ 19 - ?% of 240 = -2196
What will come in the place of question mark (?) in the given expression?
(44 × 72 ÷ 6) ÷ 11 = (92 + ?) ÷ 3
(15 × 16) + 242= ? × 16
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