Question 1: If there are African elephants X and Asian elephants Y, then:
X+Y= 13
6X+3.6Y=66
The second mention: the time for a dog to run is the same as the time for two people to meet, so finding the time for two people to meet is the key to solving the problem;
Meeting time =14/(6+4) =14/10 km/h.
So the dog's distance =14/10 *15 =?
The third question: It is easier to answer this question with indirect unknowns, so suppose it takes my brother x minutes, then:
70x=80x-2* 1*80
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What is the course plan? What are the components of the course plan?
Curriculum plan, also known as teaching plan, is the overall plan of curriculum setting a