A. 25 cm2
B. 42 cm2
C. 49 cm2
D. None of these
✅ The correct answer is option D. None of these.
Area of a triangle = r * s
Area of a triangle = r * s
371. A rectangular field 30 m long and 20 m broad. How much deep it should be dug so that from the earth taken out, a platform can be formed which is 8 m long, 5.5 m broad and 1.5 m high where as the earth taken out is increase by 10/5?
A. 12 cm
B. 10 cm
C. 18 cm
D. 24 cm
✅ The correct answer is option B. 10 cm.
30 * 20 * x = (8 * 5.5 * 1.5)/2
30 * 20 * x = (8 * 5.5 * 1.5)/2
368. The ratio of boys and girls in a class was 11:13. 8 girls and 4 boys join the class from this academic year and the ratio becomes 4:5. Find the strength of the class.
A. 96
B. 68
C. 72
D. 108
✅ The correct answer is option D. 108.
Let the number of boys and girls in the class be 11x and 13x. 4 boys and 8 girls join the class. Strength of the class
Let the number of boys and girls in the class be 11x and 13x. 4 boys and 8 girls join the class. Strength of the class
= 11x+13x+4+8
= 24x+12 (11x+4):(13x+8) = 4:5 5*(11x+4)=4*(13x+8) 55x+20=52x+32 3x=12 x=4 24x+12=108
365. Divide Rs.2000 into two shares in the ratio 3:2.
A. Rs.1200,Rs.800
B. Rs.800,Rs.1200
C. Rs.1500,Rs.500
D. Rs.1100, Rs.900
✅ The correct answer is option A. Rs.1200,Rs.800.
3x+2x=2000 5x=2000 x=400 3x=1200 2x=800
3x+2x=2000 5x=2000 x=400 3x=1200 2x=800
362. After decreasing 24% in the price of an article costs Rs.912. Find the actual cost of an article?
A. 1400
B. 1300
C. 1200
D. 1100
✅ The correct answer is option C. 1200.
359. How much 60% of 50 is greater than 40% of 30?
A. 18
B. 13
C. 15
D. 20
✅ The correct answer is option A. 18.
357. A Man travelled a distance of 61 km in 9 hours. He travelled partly on foot at 4 km/hr and partly on bicycle at 9 km/hr. What is the distance travelled on foot?
A. 12 km
B. 14 km
C. 16 km
D. 18 km
✅ The correct answer is option C. 16 km.
355. The cost of 16 pens and 8 pencils is Rs.352 and the cost of 4 pens and 4 pencils is Rs.96. Find the cost of each pen?
A. Rs.32
B. Rs.28
C. Rs.36
D. Rs.25
✅ The correct answer is option E. None of these.
353. If the roots of a quadratic equation are 20 and -7, then find the equation?
A. x2 + 13x – 140 = 0
B. x2 – 13x + 140 = 0
C. x2 – 13x – 140 = 0
D. x2 + 13x + 140 = 0
✅ The correct answer is option C. x2 – 13x – 140 = 0.
350. (84 ÷ 14 ÷ 2 ÷ 9) * ? = 33⅓
A. 100
B. 300
C. 90,000
D. 10,000
✅ The correct answer is option A. 100.