In what rate of interest Rs 4000 amounts to Rs 6000 in 2 years

Which fraction below is equivalent to 10/12?

If the value of x increases by 5, how does the value of m(x + 3) change? a) it increases by 5m. b) it increases by 8m. c) it decreases by 5m. d) it decreases by 8m.

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.