Jika seorang berjalan menempuh jarak ⅖ km dalam 5 menit, berapa kecepatan rata-rata perjalanan orang tersebut dalam 1 jam…..

Let, the numbers be "x" and "y". Consider "x" as the triple digit number. Now, according to the question, x + y = 217..........................equation (1)
x * y = 642............................equation (2)
Now, Taking equation (2), x * y = 642 y = 642 / x..................................equation (3)
Now, Taking equation (1), x + y = 217
Substituting the value of y from equation (3), we get,
x + x 642 ​ = 217
x x ∗ x + 642 ​ = 217
x 2 + 642 = 217 ∗ x
x 2 + 642 = 217 x
x 2 + 642 − 217 x = 0
x 2 − 217 x + 642 = 0
x 2 − 3 x − 214 x + 642 = 0
x ( x − 3 ) − 214 ( x − 3 ) = 0
( x − 3 ) ( x − 214 ) = 0
Using zero product property, EITHER, x - 3 = 0 x = 3 OR, x - 214 = 0 x = 214 Since, "x" is the triple digit number, x = 214. Now, Taking equation (2), x * y = 642 Substituting the value of "x" in the equation, we get, (214) * y = 642 y = 642 / 214 y = 3 **
** So, the numbers are 214 and 3.

Answered by rabinshrestha41 | 2024-06-10

The two numbers that satisfy the conditions are 214 (the 3-digit number) and 3 (the 1-digit number). Their sum is 217, and their product is 642, which meets the criteria given in the problem. The solution confirms that 214 falls between 200 and 225, as required.
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Answered by rabinshrestha41 | 2024-10-01

2/5 = 5 menitx = 60menit(2/5) /x = 5/605x = 24x = 4,8Jadi kecepatan rata-rata dalam 1jam adalah 4,8km/jam

Answered by Puzhie | 2025-07-18