Quantitative Aptitude + Reasoning Expert A.Satish kumar

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Quantitative Aptitude + Reasoning Expert A.Satish kumar

I provide best methods and solutions of all type questions for Ssc and Bank Po exams.

26/08/2013

17. The value of 2.1(36) ̅ is :
A) 47/220 B) 68/495 C) 2 3/22 D) None of these

25/08/2013

A and B are two alloys of gold and copper prepared by mixing metal in proportion 7:2 and 7:11 respectively. If equal quantities of the alloys are metted to form a third alloy C, the proportion of gold and copper in C will be ?
(A)5:9 (B)5:7 (C)7:5 (D)9:2
Short cut
SOLUTION-IN A Alloy-multiply 7:2 by 2, u get 14:4 now total parts are 18 in A alloy and total parts in B alloy are also 18 that is 7:11....now u can add directly gold with gold aand copper with copper bcz total parts are equal.....7+14:4+11...u get 21:15 which is equal to 7:5

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