Akilogram of whole-wheat flour costs $6. what is the cost of
400 grams of the flour?

The answer is $2.40. You get this by first converting grams into kilograms. So you get 0.4 as kilogram and finally you multiply by $6 so you get $2.40
Hope that helps :)

$250 deductible means jane must pay the first $250 of her bill. so the insurance company paid = (80% of bill) - deductible = (0.8 x $2550) - $250 = $2040 - $250 = $1790 and jane's cost is = (bill) - (insurance payment) = $2550 - $1790 = $760