In 2020, a customer buys 5 GE 10% debentures, M '40, at 85. The interest payment dates are Feb 1st and Aug 1st. The bonds are callable as of 2030 at 103. The current yield on the bonds is:

when atmosphere interacts with biosphere they focuses on on the sources and sinks of green house gases (ghgs) air pollutants, particular matters, water and energy between the earth's surface and the atmosphere. the biosphere affects the climate. the atmosphere and biosphere are in constant interaction with each other, and all living things rely on gases in the atmosphere for life. organisms such as animals take in oxygen gas form the atmosphere to use in every cell of their body for smooth functioning of daily routine exercises.

the answer is 0.42 is that is an option. this question provides no info