Question

Q.1 The speed of a train is 80 km/hr. It is
(i) increased to 130 km/hr. Find the percentage increase.
(ii) decreased to 65 km/hr. Find the percentage decease.
Answer full explain
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Answer 1

Answer:

(i) Speed of the train = 80kmph Speed increased to = 130kmph increase in speed = 130 - 80 =50kmph

percentage = 50/80 x 100= 62.50%

percentage increase=62.50%

(ii) (80-65)/80 x 100

= 15/80 x100

= 1500/80

= 18.75%

percentage decease=18.75%

hope it helps you...

Answer 2

Answer:

speed increased from 80 t0 130

it mean speed increased 50

so (50÷80]×100=62.5%

speed decreased 80 to 65

it mean speed decreased 15

so (15÷80)×100=18.75%