Question 1192503
i get the following:


d = n + .3 * n = 1.3 * n
j = d - .5 * d = .5 * d
n = j + 3577


d = the number of melons bought in december.
j = the number of melons bought in january.
n = the number of melons bought in november.


since n = j + 3577 and j = .5 * d and d = 1.3 * n, then:
n = .5 * 1.3 * n + 3577
combine like terms to get:
n = .65 * n + 3577
subtract .65 * n from both sides of the equqtion to get:
.35 * n = 3577
solve for n to get:
n = 3577 / .35 = 10220.


since n = j + 3577, then j = n - 3577 = 10220 - 3577 = 6643.


since d = 1.3 * n, then d = 1.3 * 10220 = 13286.


you have:
d = 13286
j = 6643
n = 10220


d = 1.3 * n becomes 13286 = 1.3 * 10220 which becomes 13286 = 13286.
j = .5 * d becomes 6643 = .5 * 13286 which becomes 6643 = 6643.
n = j + 3577 becomes 10220 = 6643 + 3577 which becomes 10220 = 10220.


if the assumption are correct, then the solution is correct.
the solution is that the fruit seller bought 10220 lemons in november.


let me know if this was good.