Sophie is willing to sell her used economics textbook for $30. Ruby is willing to pay $60 for the used economics textbook. Sophie and Ruby agree on a price of $45. The gains from trade for Sophie equals and the gains from trade for Ruby equals .

Determine if the following statements are true or false. an increase in government spending can crowd out private investment. an improvement in the budget balance increases the demand for financial capital. an increase in private consumption may crowd out private investment. lower interest rates can lead to private investment being crowded out. a trade balance in sur+ increases the supply of financial capital. if private savings is equal to private investment, then there is neither a budget sur+ nor a budget deficit.