The equation is b-a= 21;
2b-5a = 18
a=8 and b= 29
therefore 29-8= 21
2 (29) -5 (8) = 18
58-40=18
Answer:
add all the angles
Step-by-step explanation:
140+82+78
So 40-34 is 6, which is the difference in money. Then you do 6/40 which equals a 15% discount.
Answer:
Step-by-step explanation:
John earns $200 per project for the first five projects. It means that the total amount he earned for the first five projects is
200 × 5 = $1000
He $250 per project for the next 10 projects. It means that the total amount he earned for the next 10 projects is
250 × 10 = $2500
He 350 per project for any additional projects he completes. If he completed a total number of 20 projects, then the number of additional projects that he completed is 20 - 15 = 5. He earned $350 per project for any additional projects he completes. It means that the total amount he earned for the additional 5 projects is
5 × 350 = $1750
Total amount earned for completing 20 projects is
1000 + 2500 + 1750 = $5250
