Problem of the Week (Jan 7-11)

Jan 8, 2019 | Country Hills

Grade 1-3:

Question: A sea turtle can swim 5 kilometres every 15 minutes. How far can the sea turtle swim in 4 hours?

Grade 4-6:

Question: An adult blue whale weighs 200 tonnes. An adult Hector’s dolphin weighs 50 kilograms. How many times the weight of the Hector’s dolphin is the blue whale?

Grade 7-9:

Question: A giant panda eats 15 kilograms of bamboo per day. If 5 giant pandas live in a sanctuary that produces 70 kilograms of edible bamboo per day and the sanctuary currently has 60 kilograms of edible bamboo available to the pandas, then how long will it take for the pandas to run out of bamboo?

Grade 10-12:

Question: When a young lemur leaps across the ground, it travels forward 30 decimetres and reaches a height of 10 decimetres in the air. Each leap takes 2 seconds from take-off to landing. Model the lemur’s leap with the equation of a parabola in which x = the elapsed time in seconds and y = the height off the ground in feet.

[Hint: A parabola in vertex form is written y = a(xh)2 + k when (h, k) is the vertex.]


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