339.286

We have, 0.29+0.36
\(\quad Ones\quad Tenths\quad Hundreadths\\ \quad \quad 0\quad \quad \quad \quad 2\quad \quad \quad \quad \quad 0\\+\quad 0\quad \quad \quad \quad 3\quad \quad \quad \quad \quad 6\\\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\\ \quad \quad0\quad\quad\quad\quad6\quad\quad\quad\quad\quad5\\\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\)
\(\therefore\)    0.29+0.36=0.65

We have, 2 rupees 5 paise = Rs 2+ 5 paise
=Rs 2 + Rs \(\left( 5\times \frac { 1 }{ 100 } \right) \) = Rs (2+0.50) = Rs 2.50

\(2.09=2+\frac { 0 }{ 10 } +\frac { 9 }{ 100 } ,2.19=2+\frac { 1 }{ 10 } +\frac { 9 }{ 100 } \)
Compare the whole part of 2.09 and 2.19 we get 2 = 2
So, compare the tenths part, we get 0 < 1
Hence, 2.19 > 2.09

\(400+00+7+\frac { 2 }{ 10 } \)

(a) Total money that Seem a has = Rs 2000.
Cost of readymade garments = Rs 987.50
Cost of medicines = Rs 210.25
Cost of groceries = + Rs 530.25
                                    __________
             Total cost = Rs 1728.00
                                   ___________
Money donate for charity = Rs 200
                                        =Rs 1728.00
        Total money spent = + Rs 200
                                       ____________
                                           Rs 1928
                                       ____________
Money she had = Rs 2000
Spent money = - Rs 1928
                           _________
Balance =            Rs 072
                           _________
So, Rs 72 are left with her.
(b) Humanity, helpfulness.

Weight of rice purchased by Ravi
= 5 kg 400 g = 5 kg + 400 g
\(= 5 kg+ 400\times{1\over 1000}kg\)   \(\begin{bmatrix} \because 1\ g={1\over 1000} kg\end{bmatrix}\)
\(=5\ kg+{400\over1000}\)kg = (5+ 0.400) kg = 5.400 kg
Weight of sugar purchased by Ravi
= 2 kg 20 g = 2 kg+ 20 g
\(= 2 kg+ 20\times{1\over1000}kg\)    \(\begin{bmatrix} \because 1\ g={1\over 1000} kg\end{bmatrix}\)
\(=2\ kg+{20\over1000}kg\) = (2+ 0.020) kg = 2.020 kg
Weight of flour purchased by Ravi
= 10 kg 850 g = 10 kg + 850 g
\(=10\ kg+850\times{1\over 1000}kg\)   \(\begin{bmatrix} \because 1\ g={1\over 1000} kg\end{bmatrix}\)
\(=10\ kg+{850\over1000}kg\) (10 + 0.850) kg = 10.850 kg
\(\therefore\) Total weight of his purchases
\(\quad5.400\\\quad2.020\\+10.850\\\_\_\_\_\_\_\_\_\\\ \ 18.270\\\_\_\_\_\_\_\_\_\)

Hence, the total weight of all his purchases is 18.270 kg.

Rs 313.86

24.81

To get the required number, we have
117.47 - 47.95 = 69.52

Converting the given decimals into like decimals
we get
53.5 - 34.68 + 64.75 - 28.9
= (53.50 + 64.75)-(34.68 + 28.90)
= 118.25 - 63.58
= 54.67