Andy has $123in his checking account. if andy has $7 less than 4 times the amount that rachel has in her account, what is the amount of money in rachels account?

Balance in Rachel account  = $37.75

Step-by-step explanation:

Given:

Balance in Andy checking account = $123

Balance in Andy checking account = 4[Balance in Rachel account - 7]

Find:

Balance in Rachel account

Computation:

Assume;

Balance in Rachel account  = a

So,

Balance in Andy checking account = 4[a - 7]

123 = 4[a - 7]

123 = 4a - 28

4a = 151

a = 37.75

Balance in Rachel account  = $37.75

triangle and cube

step-by-step explanation:

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.