Page 49 - NUMINO Challenge_K2
P. 49
Type Study Draw a Picture
There are a total of 5 bicycles and tricycles. If there are 13
wheels, how many of each bicycle and tricycle are there?
Solving through Assumptions
A representative problem that is solved using assumptions is the problem of the crane and turtle. In this
problem, the total number of heads and legs are given, and the number of each animal needs to be solved.
At an animal farm, there are cranes and turtles. When counted,
there were total of 6 heads and 18 legs. How many of each
animal are there?
If it is assumed that all 6 heads belong to a crane, then the total number of legs should be 12 since each crane
has 2 legs. The total number of actual legs is 18 which is a difference of 6. If 1 crane is changed to 1 turtle, the
number of legs will be increased by 2, so 3 cranes must be changed to 3 turtles. There are 3 cranes and 3 turtles.
46 NUMINO Challenge K2
There are a total of 5 bicycles and tricycles. If there are 13
wheels, how many of each bicycle and tricycle are there?
Solving through Assumptions
A representative problem that is solved using assumptions is the problem of the crane and turtle. In this
problem, the total number of heads and legs are given, and the number of each animal needs to be solved.
At an animal farm, there are cranes and turtles. When counted,
there were total of 6 heads and 18 legs. How many of each
animal are there?
If it is assumed that all 6 heads belong to a crane, then the total number of legs should be 12 since each crane
has 2 legs. The total number of actual legs is 18 which is a difference of 6. If 1 crane is changed to 1 turtle, the
number of legs will be increased by 2, so 3 cranes must be changed to 3 turtles. There are 3 cranes and 3 turtles.
46 NUMINO Challenge K2
