The numbes x, y, z are proportional to 2, 3, 5. The sum ,of x, y, z is 100. If y ;= px - 10, then p is equal to

1)  3/2

2)  2

3)  5/2

4)  3

Ranjit lent to Sujit Rs. 600 far 2 years and Rs. 150 to Alak far 4 years and received fram bath Rs. 90 as total interest.Interest being simple, the rate ,of interest charged per annum was  -

1)  12%

2)  6%

3)  5%

4)  2%