# If a diagram has a 5 litre beaker of oil. 1 litre is about 1 3/4 pints a)Express 1 3/4 as decimal. b)how many pints of oil are there in the 5 litre ....beaker. c)Express ur answer (B) correct to 1...

If a diagram has a 5 litre beaker of oil.

1 litre is about 1 3/4 pints

a)Express 1 3/4 as decimal.

b)how many pints of oil are there in the 5 litre ....

beaker.

c)Express ur answer (B) correct to 1 decimal

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### 1 Answer

Notice that 1 liter is expressed in pints using a mixed number `1 3/4` . You need to remember that a mixed number is expressed by an integer followed by a proper fraction.

You need to change the mixed number `1 3/4` into an improper fraction (numerator is larger than denominator), hence `1 3/4 = (1*4+3)/4 =gt 1 3/4 = 7/4` .

a) You need to express `7/4` as a decimal, hence you need to search for a number you may multiply 4 to yield 10, 100, 1000 or more. Notice that if you multiply 4 by 25 yields 100, hence you need to multiply by 25 both numerator and denominator such that:

`(7*25)/(4*25) = 175/100`

You need to write down the numerator and then you need to place the decimal point two spaces from the right because there are two zeroes after 1 (100).

`175/100 = 1.75`

Hence, `1.75` expresses about `1` liter.

b) If 1 liter is about `1.75` pints, then 5 liters are `5*1.75 = 35/4 = 8 3/4 =8.75` pints.

c) Notice b) contains the answer expressed in decimals, hence 5 liters `~~ 8.7` pints (corrected to 1 decimal).

**Hence, the answers to the points a),b) and c) are: a)`1 3/4 = 1.75` , b) 5 liters = `8 3/4` pints , c) 5 liters`~~` 8.7 pints.**