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Amanda, Ben, and Carlos share a sum of money. Their portions are in the ratio of 1:2:7, respectively. If Amanda's portion is 20, what is the total amount of money shared?

 Jul 9, 2020
 #1
avatar+27660 
+2

Amanda's is    1 out of   1+2 + 7 = 10      1/10th

10 x 20 = $ 200 total

 Jul 9, 2020
 #2
avatar+253 
+1

Thank You!

MathWizPro  Jul 9, 2020
 #3
avatar+781 
+2

Amanda's portion is 1/10 of the total, which is $20. Then the total amount is $200

 Jul 9, 2020
 #4
avatar+253 
+1

Thank you as well!

MathWizPro  Jul 9, 2020
 #5
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0

can anyone help me 

 

605,8=(Pi/1530)²*21000*i

 

i = 6842 cm^4 

ist that right?if yes can you show me the way

 Jul 9, 2020
 #6
avatar+27660 
+1

605,8=(Pi/1530)²*21000*i      divide both sides by  (pi/1530)^2

 

143685315.3  = 21000 i        now divide both sides by 21000

i = 6842.16

ElectricPavlov  Jul 9, 2020

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