Sagot :
[tex]\huge\color{pink}{\underline{\overline\color{hotpink}{\sf{ \: \: \: Answer: \: \: \: }}}}[/tex]
[tex]\small\color{pink}⊱─━━━━━━━━⊱༻●༺⊰━━━━━━━━─⊰[/tex]
[tex]\sf{1.\:3\:hours\:at\:40\:km/h}[/tex]
- [tex]{\large{\boxed{\sf{Speed=}{\frac{Distance}{Time}}}}}[/tex]
- [tex]{\large{\boxed{\sf{Speed=}{\frac{40\:km}{3\:hours}=13.1\:km/h}}}}[/tex]
[tex]\sf{Therefore,\:the\:speed\:is\:13.1\:km/h.}[/tex]
[tex]\:[/tex]
[tex]\sf{2.\:8\:hours\:at\:75\:km/h}[/tex]
- [tex]{\large{\boxed{\sf{Speed=}{\frac{Distance}{Time}}}}}[/tex]
- [tex]{\large{\boxed{\sf{Speed=}{\frac{75\:km}{8\:hours}=9.3\:km/h}}}}[/tex]
[tex]\sf{Therefore,\:the\:speed\:is\:9.3\:km/h.}[/tex]
[tex]\:[/tex]
[tex]\sf{3.\:5\:hours\:at\:60\:km/h}[/tex]
- [tex]{\large{\boxed{\sf{Speed=}{\frac{Distance}{Time}}}}}[/tex]
- [tex]{\large{\boxed{\sf{Speed=}{\frac{60\:km}{5\:hours}=12\:km/h}}}}[/tex]
[tex]\sf{Therefore,\:the\:speed\:is\:12\:km/h.}[/tex]
[tex]\:[/tex]
[tex]\sf{4.\:2\:hours\:at\:30\:km/h}[/tex]
- [tex]{\large{\boxed{\sf{Speed=}{\frac{Distance}{Time}}}}}[/tex]
- [tex]{\large{\boxed{\sf{Speed=}{\frac{30\:km}{2\:hours}=15\:km/h}}}}[/tex]
[tex]\sf{Therefore,\:the\:speed\:is\:15\:km/h.}[/tex]
[tex]\small\color{pink}⊱─━━━━━━━━⊱༻●༺⊰━━━━━━━━─⊰[/tex]
[tex]\sf{☁}[/tex]