Dalíz Cruz

problems/variables.js

@@ -1,3 +1,4 @@
+
 // ## Problem One
 
 // Age Calculator:
@@ -7,6 +8,14 @@
 //  * 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= 1991
+let futureYear= 2021
+let ageMax= futureYear - birthYear
+let ageMin= ageMax -1
+console.log (ageMax)
+console.log (ageMin)
+console.log (`I will be either ${ageMax} or ${ageMin} in ${futureYear}.`)
+
 // ## Problem Two
 
 // Snack Supply Calculator:
@@ -16,6 +25,12 @@
 //  * 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`".
 
+let myAge= 29
+const maxAge= 50
+let snackEstmt= 2
+let snacksMaxAge= snackEstmt * 365 * (maxAge - myAge)
+console.log (`You will need ${snacksMaxAge} to last you until the age of ${maxAge}.`)
+
 // ## Problem Three
 
 // Calculate properties of a circle, using the definitions: http://math2.org/math/geometry/circles.htm 
@@ -24,14 +39,25 @@
 //  * Calculate the area based on the radius, and log "The area is `areaOfCircle`".
 //  * Hint: https://www.w3schools.com/jsref/jsref_pi.asp
 
+let r= 10
+let circumferenceResult= 2 * Math.PI * r
+console.log ("The circumference is" +circumferenceResult)
+let areaOfCircle= Math.PI * r **2
+console.log ("The area is" +areaOfCircle)
+
 // ## Problem Four
 
 // Temperature Converter:
 //  * Store a celsius temperature into a variable.
 //  * Convert it to fahrenheit and output "`tempInCelsius`°C is `tempInFahrenheit`°F".
 //  * Now store a fahrenheit temperature into a variable.
 //  * Convert it to celsius and output "`tempInFahrenheit`°F is `tempInCelsius`°C."
-
+let tempInC= 30
+let tempInF= 36 * (9/5) + 32
+console.log (`${tempInC}°C is ${tempInF}°F `) 
+let tempInF2 = 17
+let tempInC2 = 17 - 32 * (5/9)
+console.log (`${tempInF2}°F is ${tempInC2}°C`)
 
 // ## Problem Five
 
@@ -44,6 +70,17 @@
 //  * Find the average grade of all students
 //  * Print out if Dee's grade is higher than the class average
 
+let aliceGrade= 90
+let bobGrade= 80
+let camGrade= 85
+let studentAvg= (aliceGrade + bobGrade + camGrade)/3
+console.log (studentAvg)
+let deeGrade= 100
+let classAvg= (deeGrade + studentAvg) / 2
+console.log (classAvg)
+console.log (`Dee's grade of ${deeGrade} is higher than the class average of ${classAvg}`)
+
+
 // ## Problem Six
 
 // Find the last number:
@@ -53,10 +90,11 @@
 // * a = 123
 // * Output:
 // * 3
-
 // Hint:
 // Use the remainder % operator.
 
+let a= 153 % 5
+console.log (a)
 
 // ## Problem Seven
 
@@ -82,6 +120,14 @@
 // * alice + x = y * (bob + x)
 // * Solve for alice
 
+let x = 1
+let y = 2
+let bobAge = 12
+//Alice's age equation: A+x=y*(B+x) => A= yB + yx -x
+let aliceAge = y * bobAge + y * x - x
+console.log(aliceAge)
+
+
 // ## Problem Eight
 
 // * Cat and Dog Percentages
@@ -95,6 +141,14 @@
 // * 25% of the daycare animals are cats
 // * 75% of the daycare animals are dogs
 
+let numberOfCats = 40
+let numberOfDogs = 30
+let totalAnimals = 70
+let catPercent = Math.round ((numberOfCats / totalAnimals) * 100)
+let dogPercent = Math.round ((numberOfDogs / totalAnimals) * 100)
+console.log (`Percentage of cats in animal daycare is: ${catPercent}%.`)
+console.log (`Percentage of dogs in animal daycare is: ${dogPercent}%.`)
+
 // ## Problem Nine
 
 // * Leap Year Calculator
@@ -106,7 +160,6 @@
 // * Years that are divisible by 100 are not leap years if they are not also divisible by 400. 
 // * For example 1900 was not a leap year, but 2000 was. Print "Leap year!" or "Not a leap year!" depending on the year you are provided.
 
-
 // ## Problem Ten: Predict the output
 
 // For this section write what you think will be logged as a comment next to `console.log` like so: `console.log('Cat') //'Cat'` before running the code. Then execute your file and compare with your prediction.
@@ -116,22 +169,32 @@
 //     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))