Find the least square number which is divisible by 10, 12, 15 and 18?
Find the least square number which is divisible by 10, 12, 15 and 18?
A. 1600
B. 900
C. 3600
D. 2500
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The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years. The ration of the number of boys to the number of girls in the class is___________?
The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years. The ration of the number of boys to the number of girls in the class is___________?A. 1:2
B. 2:3
C. 3:4
D. 3:5
Let the ratio be k : 1. Then,
k * 16.4 + 1 * 15.4 = (k + 1) * 15.8
= (16.4 – 15.8)k = (15.8 – 15.4)
= k = 0.4/0.6 = 2/3
Required ratio = 2/3 : 1 = 2:3The price of an article has been reduced by 25%. In order to restore the original price the new price must be increased by________?
The price of an article has been reduced by 25%. In order to restore the original price the new price must be increased by________?A. 33 1/3 %
B. 9 1/11 %
C. 11 1/9 %
D. 66 2/3 %
E. NoneA, B, C together started a business. A invested Rs.6000 for 5 months B invested Rs.3600 for 6 months and C Rs.7500 for 3 months. If they get a total profit of Rs.7410. Find the share of A?
A, B, C together started a business. A invested Rs.6000 for 5 months B invested Rs.3600 for 6 months and C Rs.7500 for 3 months. If they get a total profit of Rs.7410. Find the of A?A. Rs.3750
B. Rs.3000
C. Rs.3200
D. Rs.2160
Explanation:
60*5:36*6:75*3
100: 72: 75
100/247 * 7410 = 3000If the radius of a circle is increased to 3 times, then how many times will it’s circumference be increased?
If the radius of a circle is increased to 3 times, then how many times will it’s circumference be increased?A. 2times
B. 3times
C. 1/3 times
D. 9timesThe average salary per head of the entire staff of an office including the officers and clerks is Rs.90. The average salary of officers is Rs.600 and that of the clerks is Rs.84. If the number of officers is 2, find the number of officers in the office?
The average salary per head of the entire staff of an office including the officers and clerks is Rs.90. The average salary of officers is Rs.600 and that of the clerks is Rs.84. If the number of officers is 2, find the number of officers in the office?A. 1540
B. 960
C. 840
D. 1020The circumferences of two circles are 264 meters and 352 meters. Find the difference between the areas of the larger and the smaller circles.
The circumferences of two circles are 264 meters and 352 meters. Find the difference between the areas of the larger and the smaller circles.A. 4192 sq m
B. 4304 sq m
C. 4312 sq m
D. 4360 sq m
Let the radii of the smaller and the larger circles be s m and l m respectively.
2∏s = 264 and 2∏l = 352
s = 264/2∏ and l = 352/2∏
Difference between the areas = ∏l2 – ∏s2
= ∏{1762/∏2 – 1322/∏2}
= 1762/∏ – 1322/∏
= (176 – 132)(176 + 132)/∏
= (44)(308)/(22/7) = (2)(308)(7) = 4312 sq m