The average of first five multiples of 3 is____________?
A. 3
B. 9
C. 12
D. 15
Explanation:
Average = 3(1 + 2 + 3 + 4 + 5)/5 = 45/5 = 9
A. 3
B. 9
C. 12
D. 15
Explanation:
Average = 3(1 + 2 + 3 + 4 + 5)/5 = 45/5 = 9
A. 2500
B. 3500
C. 3600
D. 4500
Explanation:
27% of 6000 + 45% of 4200 = ?
=> ? = 27/100 * 6000 + 45/100 * 4200
=> ? = 1620 + 1890 = 3510 = 3500
A. Rs. 1800
B. Rs. 1450
C. Rs. 1360
D. Rs. 6800
A. 50km
B. 60km
C. 70km
D. 80 km
Explanation:
Let the distance between the two parts be x km.
Then speed downstream = x/4 km/hr.
Speed Upstream = x/5 km/hr
Speed of the stream = ½ (x/4 –x/5)
Therefore, ½(x/4 –x/5) = 2. => x/4 –x/5 = 4 => x = 80.
Hence, the distance between the two ports is 80km.
A. 25
B. 27
C. 30
D. 35
Explanation:
Excluded number = (27 * 5) – (25 * 4) = 135 – 100 = 35.
A. Rs.25
B. Rs.22.50
C. Rs.20
D. Rs.17.50
E. None of these
Explanation:
Let the cost of each ice-cream cup be Rs.x
16(6) + 5(45) + 7(70) + 6(x) = 961
96 + 225 + 490 + 6x = 961
6x = 150 => x = 25.
A. Rs. 14.80
B. Rs. 15.40
C. Rs. 15.60
D. Rs. 16.30
E. Rs. 18.20
Explanation:
C.P. of 50 kg wheat = (30 * 11.50 + 20 * 14.25) = Rs. 630.
S.P. of 50 kg wheat = 130% of Rs. 630 = 130/100 * 630 = Rs. 819.
S.P. per kg = 819/50 = Rs. 16.38 = 16.30.