Question

Am nevoie de HELP urgent

Answer 1

V1 = x:10   
V2 = x:15
x:10 *T+ x:15 * T=x
T:10+T:15=1
15T+10T=150
T=150:25=6 ore

Answer 2

x = distanta
t = timpul pana cand se intalnesc
x = v × t⇒ v = x /t⇒ v₁= x /t₁;  v₂= x /t₂; 
t₁=10; t₂=15
viteza1=v₁= x /t₁= x/10
viteza2=v₂==x /t₂= x/15
x=x₁+x₂  dar x = v × t
⇒x₁=(x/10) × t    si x₂=( x/15) × t
(x/10) × t +( x/15) × t = x
t/10 + t/15 = 1⇒ 15t + 10t = 150
t = 150/25 = 6 ore
cei 2 biciclisti se vor intalni peste 6 ore