A. 100
B. 300
C. 90,000
D. 10,000
Explanation:
(84 ÷ 14 ÷ 2 ÷ 9) * ? = 33⅓
=> (6 ÷ 2 ÷ 9) * ? = 100 / 3
=> 3 / 9 * ? = 100 / 3
=> ? = 100
A. 6a2 cm2
B. 8a2 cm2
C. 12a2 cm2
D. 24a2 cm2
Explanation:
6a2 = 6 * 2a * 2a = 24a2
A. Neither increased nor decreased
B. Increased by 1%
C. Decreased by 1%
D. Decreased by 10%
A. 3180
B. 3200
C. 3120
D. 3210
Explanation:
√3600 * 52 = ?
=> ? = 60 * 52 = 3120
A. 3:1
B. 8:1
C. 9:1
D. 12:1
a1 : a2 = 3 : 1
6 a12 : 6 a22 = 9: 1
A. 10 % increase
B. 10 % decrease
C. 16 % increase
D. 16 % decrease
Let price = Rs. 100, Sale = 100
Then Sale Value = Rs. (100 × 100) = Rs. 10000
New Sale Value = Rs. (70 × 120) = Rs. 8400
Decrease % = (1000/10000 x 100) % = 16 %
A. 30m
B. 40m
C. 50m
D. 60m
Explanation:
Each side of the square = 160/4m =40 cm
2(l+b) = 160
=> (l+b) = 80 (40) 2 –lb = 100
=> lb =(1600 – 100) = 1500 (l-b) 2 = (l+b) 2 – 4lb
= (80) 2 -4 x 1500 =(6400 -6000) = 400 (l-b) = 20
Therefore, l+b = 80, l-b =20
=> 2l =100
=> l= 50m