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March 30, 2015

March 30, 2015

Posted by **RS** on Saturday, May 19, 2012 at 4:13am.

2) Ameter records voltages between 0 volts and 20 volts. If the average value for three readings on the meter was 16 volts, what is the smallest possible reading, in volts?

3) The average of a set of 50 numbers is 38. The numbers of the set, namely 45 and 55 are discarded. What is the average of the remaining set of numbers?

- maths -
**Steve**, Saturday, May 19, 2012 at 4:36am1)

4 months @ 7 = 28 cartons

8 months @ 9 = 72 cartons

(assuming the year has 12 months instead of 11)

average apples sold per month is 100*66/12 = 550

2)

since the sum is 48, and no single reading is over 20, then the smallest must be at least 8.

3)

sum of numbers is 50*38 = 1900

new sum, less discarded values = 1800

new average is 1800/48 = 37.5

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