Suppose that Jim uses his budget to purchase 100 units of Good X and 100 units of Good Y. When the price of Good X rises, he purchases 55 units of Good X and 95 units of Good Y. An economist calculates his compensated budget and finds that in that scenario, Jim would buy 60 units of Good X and 105 units of Good Y. Calculate the income effect. (Remember to include a negative sign (-) if the effect reduces the quantity.)