Answer:
W = 100
Explanation:
2/5 of w is 40
1/5 of w is 40/2, which is 20
Since we know that 1/5w is 20, then we can find w by multiplying both sides by 5 so then we can get rid of 1/5.
20*5 = 100
W = 100
OR
0.4w=40
Divide by 0.4 on both sides
w = 100