Help please!!! Tests 3 and 4 failed

Question

#include <iostream>
using namespace std;

int main() {

int cost;
int paint;

cin>>paint;

cost=(paint*5+40)+((paint*5+40)/10);
cout<<cost;

return 0;
}

Answer 1

Here👇

https://code.sololearn.com/cU4M3rrW1Y62/?ref=app

Answer 2

Thank

Answer 3

// Paint costs in c++

#include <iostream>
#include <cmath>
using namespace std;

int main() {
int numberOfcolor,total_cost;
double cost,tax;

cin>>numberOfcolor;

cost=(numberOfcolor*5)+40;

tax=cost/10;

total_cost=round(tax)+cost;

cout<<total_cost;
}