Solve Math Problems

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Online math help sites solve math problems and give you step-by-step solutions so that you understand how to do the entire problem. Use online forums and discussion boards to solve any math problem with the help of live tutors. Online tutoring is a great option for students who are looking for serious help with math. Schedule daily or weekly sessions, according to your convenience and work with live tutors who explain the subject, help out with homework and enable you to solve your math problems.

Solved Examples

Question 1: Find the total cost of ten shirts at 30 dollar each and five pents at 70 dollars each.

Solution:
Cost of each shirt = 30

Number of shirts = 10

=> Cost of ten shirts = 30 * 10

=> Cost of ten shirts = 300

Again

Cost of each Pent = 70

Number of Pents = 5

=> Cost of five Pents = 70 * 5

=> Cost of five Pents = 350

Now

Total cost = Cost of ten shirts + Cost of five Pents

= 300 + 350

= 650

Hence, the total cost of ten shirts and five Pents is 650 dollars.
 

Question 2: The perimeter of a rectangle with breadth 10 m is 50 m. Find the length of the rectangle.

Solution:
Breadth of a rectangle = 10

Area of rectangle = 50

We know,

Area of rectangle = Length * Breadth

=> 50 = Length * 10

=> Length = $\frac{50}{10}$

= 5

=> Length of a rectangle is 5 m.

 

Question 3: Find the sum of $\frac{3}{4}$ and $\frac{7}{-4}$.
Solution:
Given rational numbers = $\frac{3}{4}$ and $\frac{7}{-4}$

Step 1:

Make the denominator same

=> $\frac{7}{-4}$ = $\frac{7 * -1}{-4 * -1}$ = $\frac{-7}{4}$

Step 2:

Add both the fractions

=>  $\frac{3}{4}$ + $\frac{-7}{4}$ = $\frac{3 + (-7)}{4}$


= $\frac{3 - 7}{4}$

= $\frac{-4}{4}$

= -1

=> $\frac{3}{4}$ + $\frac{7}{-4}$ = -1