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.
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