Question

If 1 1/4 kg sugar cost 2.25, find the cost of 3 1/4 kg of sugar

Answer 1

Answer:

cost of $3\frac{1}{4}$ kg sugar is  $5.80$

Step-by-step explanation:

Converting the quantity of sugar from mixed fraction to proper fraction

$1\frac{1}{4} =\frac{(1*4)+1}{4} =\frac{5}{4}$

Cost of $\frac{5}{4}$ kg of sugar= 2.25

Cost of 1 kg of sugar  $2.25*\frac{4}{5} \\=0.45*4\\=1.80$

                        similarly, $3\frac{1}{4} =\frac{(3*4)+1}{4}=\frac{13}{4}$

So, the cost of $\frac{13}{4}$ kg of sugar is  

                                           $\frac{13}{4}*1.80 \\=5.80$

cost of $3\frac{1}{4}$ kg sugar is  $5.80$

Answer 2

$6.25

Step-by-step explanation:

because 1 kg is worth 2 is 1/4 is worth .25

so multiply 2 by 3 and add 1/4

good luck hope this helps.