Suppose disposable income increases by $2,000 . As a result, consumption increases by $1,500 . Answer the questions based on this information. Where appropriate, enter your answer as a decimal rather than as a percentage.

(a) The increase in savings resulting directly from this change in income is $ ____
(b) The marginal propensity to save (MPS) is The marginal propensity to consume (MPC) is ____