function fruitShop(input) {
    let fruit = input[0];
    let day = input[1];
    let quantity = Number(input[2]);
    let totalPrice = 0;

    if(day == "Monday" || day == "Tuesday" || day == "Wednesday" || day == "Thursday" || day == "Friday") {
        if(fruit == "banana") {
            totalPrice = quantity * 2.50;
        } else if(fruit == "apple") {
            totalPrice = quantity * 1.20;
        } else if(fruit == "orange") {
            totalPrice = quantity * 0.85;
        } else if (fruit == "grapefruit") {
            totalPrice = quantity * 1.45;
        } else if(fruit == "kiwi") {
            totalPrice = quantity * 2.70;
        } else if(fruit == "pineapple") {
            totalPrice = quantity * 5.50;
        } else if(fruit == "grapes") {
            totalPrice = quantity * 3.85;
        } else {
            totalPrice = "error";
        }
    }
    else if(day == "Saturday" || day == "Sunday") {
        if(fruit == "banana") {
            totalPrice = quantity * 2.70;
        } else if(fruit == "apple") {
            totalPrice = quantity * 1.25;
        } else if(fruit == "orange") {
            totalPrice = quantity * 0.90;
        } else if(fruit == "grapefruit") {
            totalPrice = quantity * 1.60;
        } else if(fruit == "kiwi") {
            totalPrice = quantity * 3.00;
        } else if(fruit == "pineapple") {
            totalPrice = quantity * 5.60;
        } else if(fruit == "grapes") {
            totalPrice = quantity * 4.20;
        } else {
            totalPrice = "error";
        }
    }
    else {
        totalPrice = "error";
    }

    console.log(totalPrice);
}

fruitShop(["tomato","Monday","0.5"])