A. 85%
B. 120%
C. 75%
D. 125%
E. None of these
Let x percent of 64 be 80.
64 * x/100 = 80 => x = (80 * 100)/64 => x = 125
80 is 125% of 64.
A. 5
B. 6
C. 4
D. 10
A. 0.4869
B. 0.5904
C. 0.6234
D. 0.5834
Explanation:
P(winning prize atleast on one ticket)
= 1 – P(“Losing on all tickets”)
= 1 – (0.8)4 = (1 + (0.8)2)(1 – (0.8)2)
= (1.64)(0.36) = 0.5904
A. 25%
B. 40.5%
C. 55%
D. 56.25%
A. 1/2
B. 1/3
C. 1/4
D. 1/5
Explanation:
? = (98 / 7 / 2) / 14 = 1/2
A. 3 1/3 km/hr
B. 3 1/9 km/hr
C. 1 ¼ km/hr
D. 4 2/3 km/hr
Explanation:
Let Speed upstream = x km/hr
Speed downstream = 3x km/hr
Speed in still water = ½ (x+3x) km/hr = 2x km/hr
Speed of current = ½ (3x-x) km/hr = x km/hr
2x = 28/3 or x = 14/3 = 4 2/3 km/hr
A. 0.0024
B. 0.024
C. 0.24
D. 0.00024
Explanation:
24 – [2.4 – {0.24 * 2 – (0.024 – ?)}] = 22.0584
24 – [2.4 – {0.48 – (0.024 – ?)}] = 22.0584
24 – [2.4 – 0.48 + 0.024 – ?] = 22.0584
24 – 2.4 + 0.48 – 0.024 + ? = 22.0584
? = 22.0584 – 24.48 + 2.424
? = 24.2824 – 24.48 => ? = 0.0024