Question

A bottle holds 1 L 140 mL of shampoo, Radhika uses 95 mL of shampoo each week.(
(a) How many weeks will the bottle of shampoo last?
(b) If she accidentally spills 475mL of shampoo, how long will the bottle last?

Answer 1

Answer:

12

Step-by-step explanation:

A bottle holds shampoo - 1l 140ml

( convert in ml ) = 1140

Radhika uses shampoo per week - 95 ml

divide it - 1140 ÷ 95

The answer is 12

Answer 2

As per the data given in the question,

In the above question, it is given that,

A bottle holds 1 L 140 mL of shampoo, Radhika uses 95 mL of shampoo each week.

 Here we have to find.

How many weeks will the bottle of shampoo last?

If she accidentally spills 475mL of shampoo, how long will the bottle last

Thus, She used 95 mL of shampoo in 1 week,

we know that 1litre = 1000ml,

$\frac{1140 \mathrm{ml}}{95 \mathrm{ml} / \text { week }}\\=12 week$

If accidentally spill 475ml,

$=1140-475\\=665ml$

Therefore,

$=\frac{665}{95} \\=7week.$

Hence the bottle lasts for 7week if spills accidentally.