1. Find an integer which when multiplied by – 1 and divided by – 9 results into reciprocal of that integer.
2. A railway engine starts shunting wagons by first going 1000 m north of railway station.
It reverses and travels 1250 m south and then it again moves 600 m north. Finally moving 800 m south
it comes to rest. How far is the engine from the station and in which direction?
Step-by-step explanation:
Ans. 1
Let the integer be x.
ATQ,
x (-1) ÷ (-9) = 1/x
-1x = 1/x × (-9)
–1x = -9x
Hope it helps