Solve x/42= 3/7 using two different strategies

The solution of x/42= 3/7 using two different strategies is x = 18

Solution:

Given, expression is

We have to solve the above given expression using two different strategies.

Now let us use cross multiplication,

So the value of x is 18.

Now let us use comparison method,

Then, for comparison in our problem denominators should be equal so multiply R.H.S fraction with 6 and divide with 6.

Now by comparison x = 18.  Hence, the value of x is 18.  

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

idk this answer sorry cant on this one.

step-by-step explanation: