Trying to create a script which returns a t-value corresponding to a y-value input by the user, however calculations aren't being performed correctly/ not returning the right values.

close all
clear all
 
prompt = 'What is the value of y : ';
y = input(prompt)
 
if y<10000
    t = 200;
elseif 10000 <= y <= 20000
    t = 200+0.1*(y-10000);   
elseif 20000 <= y <= 50000
    t = 1200+0.15*(y-20000);    
elseif y>50000
    t = 5700+0.25*(y-50000);    
end 
 
disp('The corresponding value of t is:')
disp(t)

Calculations being done by the last two "elseif" statements aren't correct. I'm not receiving any errors so I'm unsure what I'm doing incorrectly.

[Stephen23]

Original question by Jhin Michael, copied from Google Cache:

"Trying to create a script which returns a t-value corresponding to a y-value input by the user, however calculations aren't being performed correctly/ not returning the right values."

close all
clear all
 
prompt = 'What is the value of y : ';
y = input(prompt)
 
if y<10000
    t = 200;
elseif 10000 <= y <= 20000
    t = 200+0.1*(y-10000);   
elseif 20000 <= y <= 50000
    t = 1200+0.15*(y-20000);    
elseif y>50000
    t = 5700+0.25*(y-50000);    
end 
 
disp('The corresponding value of t is:')
disp(t)

Calculations being done by the last two "elseif" statements aren't correct. I'm not receiving any errors so I'm unsure what I'm doing incorrectly.

[Rena Berman]

(Answers Dev) Restored edit

Answer 1

[darova]

See the solution