Pls explain how to do these sum I am not able to understand how to set up the equations
last yr the annual premium on a certain hospitalization insurance policy was 408$ and the policy paid 80% of any hospital expenses incurred .If the amount paid by the insurance policy last yr was equal to the annual premium plus the amt of hospital expenses not paid by thepolicy what was the total hospital expenses last yr ???
For 1979 the average home heating cost in the central region of country R was the same as the average cost for the entire country . For 1980 the average cost of the central region increased by 260$ per home, an increase of 25 percent over 1979. If for 1980, the avg cost for the entire country increased 22 percent what was the average increase in cost per home for country R
Car x and y were travelling together on a straight road at a constant speed of 55 miels per hour when car x stopped for 5 minutes .IF car y continued to travel at 55 mph how many minutes will it take car x travelling at 60mph to catch up with car y ??
What is the total number of positive integers that are less than 100 and that have no positive factor in common with 100 ?
Is there some formula to find this out. Or pls show me how to this with equations
Hi,
Last year the annual premium on a certain hospitalization insurance policy was 408$ and the policy paid 80% of any hospital expenses incurred .If the amount paid by the insurance policy last yr was equal to the annual premium plus the amt of hospital expenses not paid by the policy, what was the total hospital expenses last yr ???
x = total hospital expenses
amount paid = premium + amount not paid
.80x = 408 + .20x
.60x = 408
x = 680$ < ==ANSWER
For 1979 the average home heating cost in the central region of country R was the same as the average cost for the entire country . For 1980 the average cost of the central region increased by 260$ per home, an increase of 25 percent over 1979. If for 1980, the avg cost for the entire country increased 22 percent what was the average increase in cost per home for country R
260$ = 25% increase from 1979 cost in region R
260 = .25x
x = 1,040$ <=1979 cost in region R and in entire country
If the country’s cost increased by 22% in 1980, then the increase was 22% of 1,040 or .22 x 1,040 = 228.80$ <==ANSWER
Car x and y were traveling together on a straight road at a constant speed of 55 miles per hour when car x stopped for 5 minutes .IF car y continued to travel at 55 mph how many minutes will it take car x traveling at 60mph to catch up with car y ??
5/60 hour x 55mph = 55/12 miles traveled by car y
d + 55/12. . . d
————– = —–
. . 60 . . . . . 55
55(d + 55/12) = 60d
55d + 3025/12 = 60d
3025/12 = 5d
3025 = 60d
. . . . . . ._
d = 50.416 <==ANSWER
What is the total number of positive integers that are less than 100 and that have no positive factor in common with 100 ?
3, 7, 9, 11,
13, 17, 19, 21,
23, 27, 29, 31, Do you see the pattern?
33, 37, 39, 41,
43, 47, 49, 51,
53, 57, 59, 61,
63, 67, 69, 71,
73, 77, 79, 81,
83, 87, 89, 91,
93, 97, 99
There are 39 positive integers that are less than 100 that have no positive factor in common with 100. <==ANSWER
I hope that helps!!