book Maths Puzzle Numerical Ability

7 10
-- = ----
d+5 d=2

Read Solution (Total 0)

book Other Question

y=-2/3x-5/6 Thomas invested some of his $ 1,650 at 8% and the rest at 7% for one year. The annual simple interest from the 7% investment exceeds that from the other investment by $12. How much