The total number of RSM students participated in AMC 10 that year if 153 of them were invited to take part in AIME is 765 and this can be determined by using the unitary method.
Given :
In a certain year, 20% of RSM AMC 10 participants were invited to compete in American Invitational Mathematical Examination.
The following steps can be used in order to determine the total number of RSM students participated in AMC 10:
Step 1 - The unitary method can be used in order to determine the total number of RSM students participated in AMC 10.
Step 2 - According to the given data, 20% of RSM AMC 10 participants were invited to compete in AIME.
Step 3 - If 20% of students are 153 then 100% of RSM students part
icipate in AMC10 is given by:
[tex]=\dfrac{100}{20}\times 153[/tex]
Step 4 - Simplify the above expression.
= 765
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