Question

Convert 30 years to a) seconds and b) day

Answer 1

(a)

$$30\ y\cdot\dfrac{365\ d}{1\ y}\cdot\dfrac{24\ h}{1\ d}\cdot\dfrac{3600\ s}{1\ h}=9.461\cdot10^8\ s.$$

(b)

$$30\ y\cdot\dfrac{365\ d}{1\ y}=10950\ d.$$