Question

From the following information find the number of living at age 43 and qx +4:
Age -------- No. Living ------- No. Dying ------ Probability of Death ------ Probability of Survival
x ------- lx -------- dx ---------- qx ------------ px
40 -------- ... --------- 400 ----------- 0.006 ------------- .....
41 -------- ... --------- ... ----------- 0.007 ------------- .....
42 -------- ... --------- ... ----------- 0.008 ------------- .....
43 -------- ... --------- 300 ----------- .... ------------- .....