Traditional Culture Encyclopedia - Travel guide - Xiaoming's family has been traveling for five days. When will Xiaoming go home on the 20th? j

Xiaoming's family has been traveling for five days. When will Xiaoming go home on the 20th? j

Suppose X arrives home, because the sum of the dates of five days is 20, so the date is less than 20.

Then the travel dates are: x-5, x-4, x-3, x-2, x- 1.

x-5+x-4+x-3+x-2+x- 1=20

5x=35

x=7

Xiaoming will go home on the 7th.