40% of the cars in a parking lot were American made cars. If there are 60 American made cars in the parking lot, how many cars are in the lot?

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).