Math
posted by LP .
A student has a collection of grasshoppers and crickets. He has 561 insects in all. The number of grasshoppers is twice the number of crickets. Find the number of each type of insects that he has.

Math 
Ms. Sue
Let c = number of crickets
c + 2c = 561
3c = 561
c = 187
Respond to this Question
Similar Questions

math  statistics
Suppose that the number of insects captured in a trap on different nights is normally distributed with mean 2950 and standard deviation 550. b) Suppose that we change the location of a trap whenever it captures a number of insects … 
math
15 insects in all 5 grasshoppers one fourth as many crikets as ladybugs 
Ms. Sue
Say you make the following assumptions: 1. Afarmer lives on 1 hen per day for a year. (2.)1 hen eats 25 grasshoppers per day (3.)1,000 grasshoppers have a mass of 1 kg (4.) 1 grasshopper requires about 30g of soy beans per year (5.) … 
Math
Suppose a population of 160 crickets doubles in size every month. The function F(X)= 160 * 2^X gives the population after x months. How many crickets will there be after 2 years? 
Algebra
Suppose a population of 160 crickets doubles in size every month. The function gives the population after x months. How many crickets will there be after 2 years? 
Algebra 1
Sam collects insects. However, he only collects ants and beetles. One night while collecting insects for his collection, Sam had an unproductive hunt. The number of ants plus twice the number of beetles was only eight. The difference … 
Math
Gabby has 130 insects in her bug collection that have wings and 70 that have pincers. She wants to buy display cases for her collection. Each display cases should have an equal number of insects with wings and pincers. If she wants … 
Math
Gabby has 130 insects in her bug collection that have wings and 70 that have pincers. She wants to buy a display case for her collection, but is unsure how many she will need. Each display case should have an equal number of insects … 
math
Jeff find some bugs. He finds 10 fewer grasshoppers than crickets. He finds 5 fewer crickets than ladybugs. If Jeff finds 5 grasshoppers, how many ladybugs does Jeff find? 
Math
Jefff find some bugs. He finds 10 fewer grasshoppers than crickets. He find 5 fewer crickets than ladybugs. If Jeff finds 5 grasshoppers, how many ladybugs does Jeff find?