James scored 79, 80, 79, and 72 on four tests. what must he score on the next test to have a 70 average in the course? james must score on the next test to have a 70 average in the course .

James must score 40 on the next test to have a 70 average in the course

Solution:

Given that score of James in four tests are 79, 80, 79 and 72.

Need to determine how much he score in fifth test to make an overall average of 70.

Let’s assume score required in fifth test to make an average of 70 = x  

On substituting given values and assumed values in above formula we get

70 5 = 310 + x

x = 350 – 310 = 40

Hence James requires 40 marks in fifth test to make an average of 70.

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98