A, B & C earned $380.A earned $40 less than B and C earned double what A made. How much did A make?

Question

Alan, Bob, and Charles worked together on a job and earned a combined total of $380. Alan earned $40 less than Bob. Charles earned twice as much as Alan

Answer 1

me assume yu meen a+b+c=380$

a=b-40

c=2a=2*(b-40)=2b-80

a+b+c=b-40+b+2b-80

=4b-120=380

4b=380+120=500

b=500/4=125

a=b-40=125-40=85

c=2a=170

a+b+c=85+125+170

Answer 2

C earned twice the amount that A did.   So, assume C is 2 of A.

B earned $40 more than A did.   So, if $40 is taken away from B's earning, B can be assumed another A as well.   And the total sum is $340 (= 380 - 40).

Here, we can assume that there were 4 As, and each A earned the same amount, and the total was $340.   So, each A earned $85 (= 340 ÷ 4).

Therefore, A made $85, B made $125 (=85+40), C made $170(=85x2) and 85+125+170=380.  CKD.

The answer is: A earned $85.