- (27)^2 × 6 ÷ 9 + (7)^3 + 71 = (?)^3 – 431
1216111418Option C
(27)^2 × 6 ÷ 9 + (7)^3 + 71 = (?)^3 – 431 =>(729 × 6 ÷ 9) + 343 + 71 + 431 = x^3 => 486 + 343 + 71 + 431 = x^3 => x ^3 = 1331 =>x = 11 - 87.5% of 3888 – 462 × 6 = ? % of 4200
1523201012Option A
87.5% of 3888 – 462 × 6 = ? % of 4200 =>87.5% of 3888 – 462 × 6 = ? % of 4200 => 3402–2772 = x/100 × 4200 =>630 = 42x =>x = 15 - 12.5% of 9600 – 16.67% of 3240 = 33% of ?
20001110225020102550Option A
12.5% of 9600 – 16.67% of 3240 = 33% of x =>33% of x = 9600/8 – 3240/6 => 33% of x = 1200–540 =>x = 660×100/33 => x = 2000 - 150% of 5/8 of x = 75% of 1250
12501320110014401000Option E
150% of 5/8 of x = 75% of 1250 =>150% of 5/8 of x = 75% of 1250 => x = 1000 - 24.92% of 1504 + 44.88% of 804 = ?
777735720700715Option B
24.92% of 1504 + 44.88% of 804 = ? => 25/100 ×1500 + 45/100 ×800 = 375 + 360 = 735 - If the population of City D is 2087250 in the the year 2000, what was its population in the year 1970?
20 lakh5 lakh15 lakh11 lakh10 lakhOption D
Population(1970) =2087250* 100/115* 100/125* 100/132 = 11 lakh - If the population of City E and City F in the year 1970 was 12.5 lakh and 10 lakh respectively, what is the difference between the population of City E and the population of City F in the year 2000?
4.102 lakh2.115 lakh3.303lakh4.805 lakh2.105 lakhOption D
E(2000) = 12.5* 125/100* 116/100* 140/100 = 25.375 lakh F(2000) = 10* 121/100* 125/100* 136/100 = 20.57 lakh Difference = 25.375 – 20.57 = 4.805 lakh - If the population of City C and that of City D were equal in the year 1970, what is the ratio of the population of City C to that of City D in 1990?
21:2322:2518:1917:2119:22Option B
Let the population of City C and City D be x at the beginning of 1970. Population-C1990 = x *110/100* 115/100 Population-D1990 = x *115/100* 125/100 Ratio = 110/125 = 22/25 - If the population of City C was 8.5 lakh in the year 1970, what is the population of City C in the year 2000?
12.903 lakh10.812 lakh14.145 lakh11.503 lakh10.905 lakhOption A
Population = 8.5* 110/100* 115/100* 120/100 = 12.903 lakh - If, in the year 2000, the populations of City A and B are 1388800 and 1302912 respectively, the population of City B in the year 1970 was what percentage of the population of City A in the year 1970?
100%60%90%70%80%Option C
Population-A1970 1388800* 100/112* 100/124* 100/125 = 8 lakh Population-B1970 1302912* 100/120* 100/116* 100/130 = 7.2 lakh Required percentage = 7.2/8 × 100 = 90%
Directions(6-10): Following graph shows the percentage growth of population of six cities (A, B, C, D, E and F) in three decades.
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