Subject :IMO Class : Class 5
The total distance from Karan's house to Neha's house is 3000 m. The distance from Karan's house to a shopping mall is 4 times as far as from Karan's house to Neha's house.
(A) If Karan travels from his house to Neha's house and then travels to the shopping mall with Neha, find the distance travelled by Karan.
(B) Find the distance travelled by Neha from her house to the shopping mall and back to her house.
---------(A)---------(B)
A12 km-----24 km
B9 km------18 km
C9 km------24 km
D12 km-----18 km
Ans 1:
Class : Class 6
Huh?
Ans 2:
Class : Class 6
The correct answer should be (D). From the information given above, let's make some conclusions. Distance from Karan's house to Neha's house is 3,000m, or 3km. Distance to Karan's house to the Shopping Mall is four times the distance to Neha's house, which is 3,000x4=12,000m or 12km. Let's find the answers to questions A and B. Question A's answer is 12km, because on Karan's journey, he went from his house to the Shopping Mall. Question B's answer is the distance from Neha's house to the Shopping Mall multiplied by 2, because she travelled the distance two times. The distance from Neha's house to the Shopping Mall is equal to the total distance of all the places subtracted by the distance from Karan's house to Neha's house, which is equal to (12km-3km)x2=9x2=18km.
Therefore, the correct answer is (D)