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Practice each question, then open the answer or worked solution.
Raheem’s journey
Raheem has to travel 1¼ km to reach school. What distance does he travel to go to school and come back home?
Solution:-
From the question, it is given that
To reach the school Raheem has to travel = 1 ¼ km = 5/4 km
From school to home = 1 ¼ km = 5/4 km
Total distance travelled by Raheem = 5/4 + 5/4
= 10/4
= 5/2
= 2 ½ km
Therefore, he travels to go to school and comes back home = 2 ½ km
What coins?
Latha bought a pencil and a pen for seven and a half rupees. She gave Rs 10/–. The shopkeeper gave back the money in half and quarter rupees. What are the coins she got?
From the question, it is given that
Latha bought a pencil and a pen for = ₹ 7½
Money given by Latha to the shopkeeper = ₹ 10
Shopkeeper gave back the money = 10 – 7.5
= ₹ 2.5
So, the shopkeeper can return ₹ 2.5 in the following ways:
a) 1 half rupee coin and 8 quarter rupee coins
b) 2 half rupee coins and 6 quarter rupee coins
c) 3 half rupee coins and 4 quarter rupee coins
d) 4 half rupee coins and 2 quarter rupee coins
14. At the railway station
Your attention, please. Mangalore Express coming from Mangalore and going to Thiruvananthapuram, is now running late by half an hour.
Oh, the train is late today. The right time is a quarter to 7.
a) What time is the train expected to come today?
Solution:-
The right time is a quarter to 7, i.e., 6: 45
But, the train is delayed by half an hour, i.e., 30 minutes.
So, the exact time the train will arrive at 6: 45 + 0: 30 = 7: 15
b) Nazia gets off at a station after 2½ hours from this station. What time will she get off?
Solution:-
From the question,
Nazia gets off at a station after = 2: 30 hours
Then, total time taken by Nazia to reach = 2: 30 + 7: 15
= 9: 45
c) Shaji will take 5 hours to reach Ernakulam by this train. At what time will he reach there?
Solution:-
From the question, it is given that
Shaji will take 5 hours to reach Ernakulam.
Then, the total time taken by Shaji to reach Ernakulam = 7: 15 + 5
= 12: 15