diff --git a/problems/variables.js b/problems/variables.js index 831a97c..0eea656 100644 --- a/problems/variables.js +++ b/problems/variables.js @@ -7,6 +7,15 @@ // * For example, if you were born in 1988, then in 2026 you'll be either 37 or 38, depending on what month it is in 2026. // * Log them to the screen like so: "I will be either `ageMin` or `ageMax` in `futureYear`", substituting the values. +// const birthYear = 1993 +// let futureYear = 3241 +// let ageMax = futureYear-birthYear +// let ageMin = ageMax - 1 + +// console.log("I will be either "+ ageMin + " or "+ ageMax + " in " + futureYear) + + + // ## Problem Two // Snack Supply Calculator: @@ -16,6 +25,17 @@ // * Calculate how many snacks you would eat total, from your current age until the maximum age. // * Log the result to the screen like this: "You will need `snackNumber` to last you until the age of `maxAge`". +// const maxAge = 30 +// let currentAge = 28 +// let snackNumber = 4 +// console.log ((maxAge - currentAge)* 365 * snackNumber) + +// snackNumber = 2920 +// console.log ("you will need "+ snackNumber +" to last you until "+ maxAge) + + + + // ## Problem Three // Calculate properties of a circle, using the definitions: http://math2.org/math/geometry/circles.htm @@ -24,6 +44,16 @@ // * Calculate the area based on the radius, and log "The area is `areaOfCircle`". // * Hint: https://www.w3schools.com/jsref/jsref_pi.asp + +// let radius = 5 +// let Pi = (Math.PI) +// let circumferenceResult = (2 * Pi * radius) +// console.log ("The circumference " + "is " + circumferenceResult ) +// let areaOfCircle = (Pi * radius * radius) +// console.log ("The area is " + areaOfCircle) + + + // ## Problem Four // Temperature Converter: @@ -32,6 +62,16 @@ // * Now store a fahrenheit temperature into a variable. // * Convert it to celsius and output "`tempInFahrenheit`°F is `tempInCelsius`°C." +// let tempInCelsius = 100 +// let tempInFahrenheit = tempInCelsius * 1.8 + 32 +// console.log (tempInCelsius + "°C is " + tempInFahrenheit + "°F") +// tempInFahrenheit = 50 +// tempInCelsius = ((tempInFahrenheit - 32) / 1.8 ) +// console.log ( tempInFahrenheit + "°F is " + tempInCelsius + "°C.") + + + + // ## Problem Five @@ -44,6 +84,19 @@ // * Find the average grade of all students // * Print out if Dee's grade is higher than the class average +// let alicesGrade = 90 +// let bobsGrade = 80 +// let camsGrade = 85 +// let averageGrade = (alicesGrade + bobsGrade + camsGrade) / 3 +// console.log ( "The average grade is " + averageGrade ) +// let deesGrade = 95 +// averageGrade = (alicesGrade + bobsGrade + camsGrade + deesGrade) / 4 +// console.log ( " The average grade of all the students is " + averageGrade ) +// console.log ( " Dees grade of " + deesGrade + " is higher than the class average of " + averageGrade ) +<<<<<<< HEAD +======= + +>>>>>>> e2c626cfce0b6bd6ad8f4cca48f17fb457c7d574 // ## Problem Six // Find the last number: @@ -53,10 +106,18 @@ // * a = 123 // * Output: // * 3 - // Hint: // Use the remainder % operator. +// let a = 28 +// let output = a % 10 + +// console.log ("The last digit of " + a + " is " + output) + + + + + // ## Problem Seven @@ -82,6 +143,21 @@ // * alice + x = y * (bob + x) // * Solve for alice +// const bobAge = 12 +// let futureYear = 3 +// let productAge = 2 +// let aliceAge = (bobAge + futureYear) * productAge - futureYear + +// console.log ("Alice age is " + aliceAge) + +// futureYear = 1 +// productAge = 3 +// aliceAge = (bobAge + futureYear) * productAge - futureYear + +// console.log ("Alice new age is " + aliceAge) + + + // ## Problem Eight // * Cat and Dog Percentages @@ -95,6 +171,14 @@ // * 25% of the daycare animals are cats // * 75% of the daycare animals are dogs +// let numberOfCats = 20 +// let numberOfDogs = 60 +// let percentageOfCats = numberOfCats / (numberOfCats + numberOfDogs) * 100 +// let percentageOfDogs = numberOfDogs / (numberOfCats + numberOfDogs) * 100 +// console.log (percentageOfCats + "% of the daycare animals are cats") +// console.log (percentageOfDogs + "% of the daycare animals are dogs") + + // ## Problem Nine // * Leap Year Calculator @@ -116,22 +200,35 @@ // let num1 = 2 // let num2 = 5 // let num3 = num1 * num2 -// console.log(num3) +// console.log(num3) //'10' // ``` +// let num1 = 2 +// let num2 = 5 +// let num3 = num1 * num2 +// console.log(num3) + // b. // ```js // let str = 'jel' // str += 'lo' -// console.log(str) +// console.log(str) // 'jello' // ``` +// let str = 'jel' +// str += 'lo' +// console.log(str) + // c. // ```js // let string = 'My favorite number is '; // let number = 42 // let sentence = string + number -// console.log(typeof(sentence)) +// console.log(typeof(sentence)) // 'string' // ``` +// let string = 'My favorite number is' +// let number = 42 +// let sentence = string + number +// console.log (typeof(sentence))