I. Very short answer (5x1=5) 1. A cyclist rides 20 km towards East from a point P to the point Q. He then rides 30 km towards West along same path and reaches R.By which number will represent the cyclist's final position, if PQ represent positive number...
Answers
refers to the attachment given
Solution :-
given, cyclist rides 20 km towards East from a point P to the point Q and PQ represent positive number .
so, the cyclist right side of number line 20 km .
P --------------- Q
- PQ = 20 km .
now, from Q he rides towards west along same path and reaches R.
since, west direction is opposite of east direction .
R-------P --------------- Q .
- RQ = 30 km .
then,
→ RP = RQ - PQ
→ RP = 30 - 20
→ RP = 10 km .
now, since PQ represent positive number we can conclude that, P is origin and Q is on the right side of number line .
Also,
- R is on left side of number line 10 km away from origin .
therefore , the number that will represent the cyclist's final position is (-10) .
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