12. Sumita stood on the road for half an hour and counted the number of vehicles passing by. She made a tally mark
for each vehicle.
Vehicle Tally Marks Number
Cycle
Car
Auto rickshaw
Bus
Cycle rickshaw
Truck
(a) Write the number of each vehicle in the table.
Answers
Given : Sumita stood on the road for half an hour and counted the number of vehicles passing by. She made a tally mark for each vehicle.
To Find : the number of each vehicle
Solution:
Lets first understand tally marks used by sumita
She used 4 lines to make a rectangle and a diagonal line to make it 5
Hence a rectangle with a diagonal represent 5
a rectangle without diagonal represent 4
for other count the number of lines
Basically each one line represent one vehicle
Cycle has 5 rectangle with diagonal + 3 lines
= 5 * 5 + 3 = 28
Car has 2 rectangle with diagonal + 2 lines
= 5 * 2 + 2 = 12
Auto rickshaw has 3 rectangle with diagonal + 3 lines
= 5 * 3 + 3 = 18
Bus has 3 rectangle with diagonal
= 5 * 3 = 15
Cycle rickshaw has 4 rectangle with diagonal + one rectangle
= 5 * 4 + 4 = 24
Truck has 1 rectangle with diagonal + one line
= 5 + 1 = 6
Table :
Cycle 28
car 22
Auto rickshaw 18
Bus 15
Cycle rickshaw 24
Truck 6
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