A. 10/7
B. 10
C. 10/11
D. 11/10
Explanation:
LCM of numerators = 10
HCF of denominators = 1
=> 10/1 = 10
A. 18 days
B. 22 ½ days
C. 24 days
D. 26 days
If A completes a work in 1 day, B completes the same work in 3 days
Hence, if the difference is 2 days, B can complete the work in 3 days
=> if the difference is 60 days, B can complete the work in 90 days
=> Amount of work B can do in 1 day= 1/90
Amount of work A can do in 1 day = 3 × (1/90) = 1/30
Amount of work A and B can together do in 1 day = 1/90 + 1/30 = 4/90 = 2/45
=> A and B together can do the work in 45/2 days = 22 ½ days
A. Rs.1200,Rs.800
B. Rs.800,Rs.1200
C. Rs.1500,Rs.500
D. Rs.1100, Rs.900
3x+2x=2000 5x=2000 x=400 3x=1200 2x=800
A. 432 sq m
B. 356 sq m
C. 452 sq m
D. 428 sq m
Explanation:
2(3x + x) = 96
l = 36 b = 12
lb = 36 * 12 = 432
A. -5, 3
B. 3, 5
C. -3, 5
D. -3, -5
Explanation:
x2 + 5x – 3x – 15 = 0
x(x + 5) – 3(x + 5) = 0
(x – 3)(x + 5) = 0
=> x = 3 or x = -5.
A. 1/20
B. 1/5
C. 4
D. 10
Explanation:
(1.9 * 0.021) / (0.095 * 0.105) = (19 * 21 * 100) / (95 * 105) = 4
A. Rs. 112
B. Rs. 129.60
C. Rs. 119.60
D. Rs. 115.20
Explanation:
Price after 1st discount = 80% of Rs. 160 = Rs. 128
Price after 2nd discount = 90% of Rs. 128 = Rs. 115.20