1. Given: 2.0mg of riboflavin per day, 5.50microgram of

riboflavin per gram of cheese

Req’d: amount of cheese to consume per day (in lbs)

Sol’n: We know (from units convertion table) that

1000micrograms is equal to 1mg, therefore;

2mg=2000microgram, and to compute for amount

of cheese, 2000microgram/5.50microgram per

gram of cheese, we have 363.64gm of cheese,

since there is 453.592gm in 1lb (from table), we can

say that a man should eat at least 0.80lb of cheese

a day to complete his daily riboflavin req’t (363.64/

453.592).

2. Given: a square having a side of 100m length = 1 hectare

a square having a side of 208.7ft lenth = 1 acre

Req’d: no. of hectares per acre

Sol’n: 1 hectare = 100×100 = 10,000sq.mts.

let’ convert 208.7ft to meters, thats 208.7/3.28

(becoz there’s 3.28ft in a meter) = 63.628m

therefore, 1 acre = 63.628×63.628 = 4048.53sq.mts.

so, 1 acre = 4048.53m²/10,000m² per hectare

1 acre = 0.4048 hectare, or

1 hectare = 2.47 acre (check this in the table)

3. Given: 8 furlongs=1 mile, 10 chains=1furlong, 100links=

1chain

Req’d: inches in 1 link

Sol’n: from the table (1 mile = 63,360 inches)

8 furlongs = 63,360inches or 1 furlong = 7,920inches

10 chains = 7,920inches or 1 chain = 792inches

100 links = 792inches or 1 link = 7.92inches

Hope this answers ur questions, good luck!ü