Question

14. On one day on a hill, the temperature at 8 p.m. was 2°C but at mid-night that day, it fell
down to -3°C. By how many degrees did the temperature fall?
(Hint: Fall in temperature = (2-(-3)° C.]
15. A car travelled east of Delhi by 100 km and then to the west of it by 130 km. How far
from Delhi was the car finally?

please tell me fast the answer of this question and with very nice explanation please tell me fast I am in tence​

Answer 1

Answer:

If they traveled East 100 km, and then back West 130 km, they have traveled 30 km from where they originally were.

Another way to look at this problem is let's say that heading East is going forward positively. And going West is going backwards negatively. Our starting point is 0 (zero).

If they go East 100 km and then West 130 km, then they are going: 0 + 100 - 130 = -30.

Negative 30 is 30 km West.

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