A builder has some red and grey bricks. The red bricks weigh 9 kilograms each, and the grey bricks weigh 8 kilograms each. If the total weight of all 14 bricks is 120 kilograms, how many of each type of brick does Nellie have?

The number of red bricks is 6, and there are 8gray bricks.

What is the total number of red and grey bricks?

To evaluate an algebraic expression, find the expression’s value when the variable is replaced by a given number. To evaluate an expression, we substitute the given number for the expression’s variable and then simplify the expression using the order of operations.

Here given,

A red brick weighs 9 kg and a gray brick weighs 8 kg. The total number of bricks is 14, with a weight of 120kg.

Let x be a red brick and y be a gray brick.

x + y = 14bricks,

=> x = 14 – y bricks

9x + 8y = 120kg

9(14 – y) + 8y = 120

126 – 9y + 8y = 120

-y = -6

y = 6

14 – 6 = 8

The number of red bricks is 6, and the number of gray bricks is 8.

red bricksis 6, and there are 8gray bricks.## What is the total number of red and grey bricks?

algebraic expression, find the expression’s value when the variable is replaced by a given number. To evaluate an expression, we substitute the given number for the expression’s variable and then simplify the expression using the order of operations.gray bricksis 8.expressionsrefer to :https://brainly.com/question/25968875