Juma travelled from home to his grandmother place which was 5 km 850 m away. Afterwards, he was sent to a shopping centre which was 9 km 632 m and then came back to the grandmother's place. What was the total distance covered by Juma for the whole journey?

Tunajua kuwa 1 km = 1000 m.
Umbali kutoka nyumbani hadi kwa bibi:

Umbali kutoka kwa bibi hadi kituo cha ununuzi:

• Nyumbani hadi kwa bibi: $5850 \text{ m}$
• Bibi hadi kituo cha ununuzi: $9632 \text{ m}$
• Kituo cha ununuzi kurudi kwa bibi: $9632 \text{ m}$ (umbali ni uleule)

Jumla ya umbali = $5850 \text{ m} + 9632 \text{ m} + 9632 \text{ m}$

Jumla ya umbali uliosafiriwa na Juma ni $\boxed{\text{25 km 114 m}}$.

13.
Ili kuonyesha muda wa kumalizika kwa mkutano, tutaongeza muda wa mkutano kwenye muda wa kuanza.

Mkono mfupi (saa) uko kwenye 9.
Mkono mrefu (dakika) uko kwenye 12.
Hivyo, muda wa kuanza ni 9:00.

Muda wa mkutano ni saa 2 na dakika 30.
Muda wa kumaliza = 9:00 + 2 hours 30 minutes

Saa: $9 + 2 = 11$
Dakika: $00 + 30 = 30$
Muda wa kumaliza mkutano ni 11:30.

• Mkono mfupi (saa) utakuwa katikati ya 11 na 12.
• Mkono mrefu (dakika) utakuwa kwenye 6 (kwa sababu 30 dakika ni nusu ya saa, na 6 ni nusu ya 12). Muda wa kumaliza mkutano ni $\boxed{\text{11:30}}$.