Question

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​

Answer 1

$\huge\tt{\underline{Question : }}$

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

$\huge\tt{\underline{Answer : }}$

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

Therefore ,

At 7 pm its temperate will be [15- (5x3)]

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