Please help me with these two problems?

1. Frances left a 21% tip on a meal. Including the tip the cost of the meal was $52.03. What was the cost of the meal before the tip.

$43.00

2. Value Rent a Car rents a luxury vehicle at a daily rate of $37.33 plus 5 cents per mile. A business person is allotted $80 for car rental each day. How many miles can the business person travel on the $80?

$37.33 plus 5 cents per mile= $80

37.33+.05x=80

x=853.5 miles

2. subtract the 37.33 from the 80, take whatevers left over and divide it by 5 cents; thatll give you the amount of miles the person can travel.

1. take the 52.03, divide by 1.21 (since the total bill is 121% of the pre-tip bill). that gives you 43. to check it or show your work, multiply 43 by .21 (9.03), and add them together to get your final bill of 52.03. works with any tip-based problem.

121% 52.03

100% Cost Price?

now cross multiply

100*52.03/121

= 43$

2

80-37.33

= 42.67

42.67/.05

853.4 miles

S.G.;1 X+.21X=52.03; 1.21X=52.03; X(original price)= 52.03 divided by 1.21=$43.00=original price

2. $80.00 - 37.33 = $42.67 x 20 mile/$1.00=853.4 miles man can drive.

1. Divide it by 1.21 this is because to get the 50.23 you have to times the original number 1.21

2. 8000 (cause it 8000 cent) minus 3733

Then whatever is left by 5 that gives you how many miles he can go