Ratio and proportion
372/x=60/100
cross multiply
x=620 students
Multiply the average by the number of tests to find the total of the scores:
82 x 3 = 246
88 x 3 = 264
The total of the three tests would need to be between 246 and 264
The total of the first two tests is 79 + 85 = 164
Subtract the total of the first two from the totals above:
246 - 164 = 82
264 - 164 = 100
The score of the third test needs to be between 82 and 100
Answer:
95
Step-by-step explanation:
30+30 is 60
60+35 is 95
Another way to do this is to use multiplication then add. (30x2=60)
Hope I helped!
Answer:
- changing the order of the numbers we are multiplying, does not change the product
Step-by-step explanation:
7 x 8 x 11 x 2 = 11 x 7 x 2 x 8
1232 = 1232
Hope it helps!
She returned the bottle of 250 milliliter in lithium stock where another 175 milliliter of lithium was already present in the stock.
Quantity of lithium before return = 175 milliliter.
Quantity of lithium that she returned = 250 milliliter.
Total stock would be now = 175 + 250 = 425 milliliter.
So, there was 425 milliliter of lithium before she used any of it.
Hence, 425 milliliter is the final answer.
