Nine persons went to a hotel for taking their meals . Eight of?

Question

Nine persons went to a hotel for taking their meals . Eight of
them spent Rs.12 each on their meals and the ninth spent Rs.8 then
the average expenditure of all the nine. What was the total money
spent by them?

Answer 1

first you add up the total amount spent.
8 spent 12 Rs (whatever that is), so you multiply 8x12=96,
Then you add in the 9th person's cost of 8. 96+8=104; that's the total money spent.

Divide that by the number of people 104/9=11.555555, or 11.56Rs each on average

Answer 2

If the ninth spent $x, then average of all 9 is (12*8 +x )/9 so (96 +x)/9 +8 = x so 96 +x +72 = 9x giving 8x = 168 which means that x = 21, so the total spend is 96 +21 = 117

Answer 3

Given the condition, say the 9th person spent Rs. X

so the average of 9 people is (8*12 + X)/9 and Rs.8 extra than this is (96+X)/9 + 8 and that is what the 9th person spent

so we have the equation

(96+X)/9 + 8 = X

Or, (96+X)/9 + 72/9 = 9X/9

Or, 96+X+72=9X

Or, 168 = 8X

Or, X = 168/8 = 21

so total money spent is 96+21 = Rs. 117 and average spending is 117/9 = Rs. 13

Now 21 - 13 = 8 as described in the condition in the problem .. thus solved .... cool :)

Answer 4

Meals For Eight

Answer 5

8 people spent Rs.12 each on their meals
Ninth person spent Rs 8 more than the average expenditure .
Let y be the average expenditure.
Then the ninth person paid (y+8) for his meal.
Now Average Expenditure i.e. y = ((12*8)+(y+8))/9
hence Average Expenditure i.e. y = 13.
Hence the ninth person paid (y+8) = 13+8 = Rs.21
Hence the total amount paid by them = (12*8)+21 = 117.
The answer is they totally paid Rs. 117

Answer 6

Keshav is given 12 days to drive a destination 1200 km. away. for the first 6 days he goes 100km a day. Due to
accident, he cannot drive for 2 days. What is the average distance per day that he has to drive to reach his destination
in time?
a) 50 km b) 100 km.
c) 150 km d) 200 km.

can anyone give this ans with solution?

Answer 7

consider average of their expenditure as x

then, Average=x=total money/9

therefore ,12*8+(x+8)=9x

8x=104

x=13

therfore,9x=9*13=117rs

Answer 8

12 * 8 + 8 = 104
104/9 = 11.56

Answer 9

288

Answer 10

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