Problem Solving PLEASE HELP!?

Question

K these are the questions

1)Two hundred twenty-five dignitaries are invited to a parade. There are three reviewing stands that each seat 70 people. How many extra chairs will be needed to seat all the digitaries?

2)There are 17 floats in the parade. Each float is decorated with1026 carnations. If 500 carnations cost $189.50, How much will it cost to decorate all 17 floats?

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Answer 1

Question 1 :

Total No of Dignitaries : 225
Total No of Seat Available : 3 x 70 (3 stands each 70 seats)
= 210

The extra chair needed = 225-210 = 15 seats.


Question 2 :
Total No of Flat = 17
Each float require 1026 carnation
Total number of carnation required : 17 x 1,026 = 17,442 carnations
500 carnations cost $189.50, therefore 1 carnation cost = 189.50/500 = $0.379
The cost to decorate all 17 floats = Total number of carnation required x cost per carnation
= 17,442 carnation x $0.379 = $6,610.518

Answer 2

let x reresent 70 seats
x=70

3x+y=225
3(70)+y=225
210+y=225
y= 15 seats

2)500/189.50=1026/x
500x=194427
x=388.85

1026 carnations cost $388.85, then 1 carnation cost $.378

there are 17442 carnations in 17 floats.
$.378x17442=$6610.45

Answer 3

1) 15
2) $6610.218

Answer 4

15
$6610.52