Form the pair of linear equations in the following problems, and find their solutions (if they exist) by the elimination method: Meena went to a bank to withdraw Rs 2000. She asked the cashier to give her Rs 50 and Rs 100 notes only. Meena got 25 notes in all. Find how many notes of Rs 50 and Rs 100 she received.

Q: At the beginning of summer, Mark has $200 in savings and Ryan has $350 in savings. The brothers have…

A: Let the number of mowing jobs be j and Money in savings be s First we will make equation for Mark:…

Q: Tevin needs a total of $410 to buy a new bicycle. He has $35 saved. He earns $15 each week…

A: Given: Tevin needs at $410 to buy a new bicycle.[Total amount] He has  $35 saved. x= Number of…

Q: Deanna and Lise are playing games at the arcade. Deanna started with $15, and the machine she is…

A: Consider the provided question, Let D = the amount of money Deanna has after x games.   given,…

Q: John went to three bookshops. He's spent 1/3 of his money and another $120 at the first bookshop. He…

A: First we will form the equation corresponding to the given statements then solving the equations…

Q: Harold gave 40% of his money and an additional $5 to Cara. He gave 75% of his remaining money and an…

A:

Q: Her monthly salary is twice the sum of her husband’s salary and four. Her monthly salary is also…

A:

Q: If Lupe walk 0 miles, he will earn $50 for his library fundraiser just by signing up to help. But if…

A: If Lupe doesn't walk also, he is earning $50 just for signing up to help. If Lupe walks 1 mile, he…

Q: A father challenged his son to do his best in solving the problems given as his homework. As part of…

A: Consider the given information. The given values are defined as. X problems correctly, y Problems…

Q: how much does a pound of chocolates cost?

A: We need to find the cost of a pound of chocolates

Q: Bella wants to buy a toy doll but she is short of $12.50. Cara wants to buy the same doll but she is…

A: we can consider as Bella has $X and cara has  $(X+11)

Q: Jose is 5 less than three times his brother's age. The sum of their ages is 51. Let Jose's age be…

A: Given,     Jose's is 5 less than three times his brothers age.     The sum of their ages is 51.

Q: Danny and Mary want to go to a concert next weekend.  The tickets will cost a total of $70.  After…

A:

Q: A bookstore buys 35 books for $271. Some books cost $7 each and the remainder cost $9 each. How many…

A: Let there are two types of books, type A and type B. Let there are x number of books of type A, And…

Q: Suppose that Mario owns a company that rents moving vans. Mario’s customers pay $22 per day to rent…

A: Solution

Q: The cost of phone plan Q is $10 per month plus &0.14 per minute.phone plan R costs $7 per month plus…

A: Let x  denotes the number of minutes. Then cost of plan Q is  Qx=10+0.14x ⇒Q70=10+0.1470⇒Q70=19.8…

Q: A Sum of Rs 70O is to be used to give seven cash prize to students of a school for their overall…

A:

Q: Bessy has 6 times as much money as Bob, but when each earns $6, Bessy will have 3 times as much…

A: There are two person Bessy and Bob. Consider the amount of money initially that Bob has x (in…

Q: Bill and Ian have tasks of mowing grass in their yard. One day they do their work at the same time.…

A:

Matrices

‘Matrices’ is the plural form of the word matrix, and it is basically a spreadsheet in the form of a box. In mathematics, various functions can be carried out with matrices. Generally, a matrix comes in the shape of a square or rectangle. The elements are distributed horizontally in the form of rows, and vertically in the form of columns.