20.
39. The temperature of a city at 2 p.m. was 15 °C. Every hour it decreases by
3°C. The temperature at 7 p.m. will be

1 thought on “20.<br />39. The temperature of a city at 2 p.m. was 15 °C. Every hour it decreases by<br />3°C. The temperature at 7 p.m. will be”

1. [tex]\huge\tt{\underline{Question : }}[/tex]

   The temperature of a city at 2 p.m. was 15 °C. Every hour it decreases by

   3°C. The temperature at 7 p.m. will be

   [tex]\huge\tt{\underline{Answer : }}[/tex]

   The temperature of a city at 2 p.m. was 15 °C.

   Therefore ,

   At 7 pm its temperate will be [15- (5×3)]

   i.e; 0° C

   More Information: –

   Time difference = 7–2

   i.e; 5

   Every hour, temperate is decreases by 3° C

   Therefore ,

   in 5 hr it will decrease by (5×3) = 15°C

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