Question

A patient is given $\bf5 \frac{1}{2}$ ml of medicine three times a day. How long does a bottle of 132 ml of medicine last ?

Answer 1

$\sf\underline{Step-by-step \: explanation}$


Medicine taken per day = $\dfrac{11}{2}$×3

(We multiplied it by three because it is taken 3 times a day)


16.5 ml


---------Proportion method----------

Let the number of days be x

Day : Day : : ml : ml

--1---: --x---: : 16.5 : 132

Product of means= Product of extremes

16.5 x= 1×132

$\dfrac{132}{16.5}$

We have to cancel the points...

$\dfrac{1320}{165}$ (Multiplying by 10 for cancelling the decimal)

After cancellation...

8


Hence, the person will finish the medicine in 8 days.

Answer 2

Answer:

8 days

Step-by-step explanation:

Given that patient is given 5 1/2 ml of medicine three times a day.

So, 11/2 * 3 = (33/2) = 16.5 ml

Let the number of days medicine last be 'x'.

⇒ 16.5 * x = 132

⇒ x = 132/16.5

⇒ x = 8.

Therefore, Medicines last for 8 days.

Hope it helps!