Coins

function solve(rest) {
    rest = Number(rest);
    let coinCount = 0;

    while(rest > 0) {
        if(rest >= 2) {
            rest = rest - 2;
            rest = rest.toFixed(2);
            coinCount++;
        } else if (rest >= 1) {
            rest = rest - 1;
            rest = rest.toFixed(2);
            coinCount++;
        } else if (rest >= .5) {
            rest -= .5;
            rest = rest.toFixed(2);
            coinCount++;
        } else if (rest >= .2) {
            rest -= .2;
            rest = rest.toFixed(2);
            coinCount++;
        } else if (rest >= .1) {
            rest -= .1;
            rest = rest.toFixed(2);
            coinCount++;
        } else if (rest >= 0.05) {
            rest -= 0.05;
            rest = rest.toFixed(2);
            coinCount++;
        } else if (rest >= 0.02) {
            rest -= 0.02;
            rest = rest.toFixed(2);
            coinCount++;
        } else if (rest >= 0.01) {
            rest -= 0.01;
            rest = rest.toFixed(2);
            coinCount++;
        }
    }
    console.log(coinCount);
}

solve(2);