self Maths Puzzle

If 3/p = 6 and 3/q = 15 then p - q = ?
A. 1/3 B. 2/5 C. 3/10 D. 5/6 E. None of the above

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ans (c)3/10
3/p=6=> 3/6=p=>p=1/2
3/q=15=>1/5=q
1/2 - 1/5=>3/10
12 years agoHelpfull: Yes(1) No(0)

self Other Question

The sixth term of a HP is 1/61 and the 10th term is 1/105. The first term of the H.P. is If + means * and * means / and / means %. what is the value of 2+3*5/7?