exam Exam Numerical Ability Area and Volume

the tremors of earthquake are felt at interval of 15 seconds.The first tremor was felt at 00:54:57 and the last tremor was felt at 10:45:12 am. How many times were the tremors felt?

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exam Other Question

A,B,C,D started business with investments in ratio 3:4:5:6.As B &C were working partners they are paid equal salaries.the ratio of B's & C's total annual income is 9:10.If the total amount of profit is 84000, the find B's salary?

1=5
2=25
3=125
4=625
5=?