Gulab & Gulab Inc. (G&G) issued 10% semi-annual coupon bond with maturity of 10 years and face value $1,000. What is the price you are willing to pay for G&G bond if the yield to maturity is 8%?

What would the % change in price for Nakamura, if the yield decreases to 7%.

Kulfi & Kulfi Inc. (K&K) issued a similar bond (same time to maturity, face value and yield at 8% as in G&G) but with a lower coupon rate. Will the % change in price for K&K higher or lower than G&G if the yield decreases to 7%? Please explain why.