"Dad, where had you been?" asked Darren.
"I had been to the attic, my son," replied Dad. "And do you know what I saw there? There was a big web with 19 spiders and flies on it."
"How many spiders were there?" asked the little boy with curiosity.
"Well, there were a total of 134 legs on the web," answered Dad with a smile. "Now you can find out how many spiders were there by yourself. Can't you?"
Can you help the little boy find out how many spiders were on the web in the attic?
2 comments:
only 1 spider to a web I beleive
"Assuming 6 legs for each insect, 19 insects will have 114 legs.
But, there are 134 − 114 = 20 extra legs.
It is important to note that spiders have 8 legs and flies have 6 legs. So, there are 2 extra legs per spider on the web.
Thus, the 20 extra legs belong to 10 spiders."
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