Question
(175/3)% of the raindrops could have been collected,
when 6 cm of rain has fallen on a part of land of area 2 km2, in a tank having a 200 m × 10 m base, then water collected in the tank is 50% of its capacity. Find the capacity of the tank?Solution
The volume of rain water in the land which could have been collected and the volume of water in the tank should be equal . Let, level of water in the tank is h meter. According to the question, ⇒ 6/100 × 2000 × 2000 × 175/300 = 200 × 10 × h ⇒ h = 70 m Volume of water in the tank = 200m × 10m × 70m = 140000 m3 Since, water in the tank is 50% of its capacity. So, capacity of tank = (140000/50) × 100 = 280000 m3
230 192 172 ? 122 100
...What value should come in the place of (?) in the following number series?
64, 80, 104, ?, 176, 224
97, 106, ?, 195, 411, 460
What will come in place of the question mark (?) in the following series?
29, 42, ?, 95, 135, 184
Find the missing term:
2, 6, 15, 31, 56, ?
32   48   96   ?   720   2520
82, 98, 130, 178, 242, ?
4 10 ? 62.5 156.25 390.625
...140, 146, 170, 224, ?, 470
7 47 ? 223 359 527
...
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