Question 12

100 perons had food provision for 24 days. If 20 persons left the place, the provision will last for
(a)30 days
$(b) \frac{96}{5} d a y s$
(c)120 days
(d)40 days

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Solution

$∵$ 100 persons had food provision for 24 days
$∴$ 1 person had food provision for $24 \times 100$ i.e. 2400 days.
If 20 persons left the place, then remaining persons =(100 -20)=80
$∴$ 80 persons had food provision for $\frac{2400}{80}$ i.e. 30 days.
Hence, option (a) is correct.

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Question 12

100 perons had food provision for 24 days. If 20 persons left the place, the provision will last for
(a)30 days
$(b) \frac{96}{5} d a y s$
(c)120 days
(d)40 days

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Ratio and Proportion

Standard IX Mathematics

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Question 12 100 perons had food provision for 24 days. If 20 persons left the place, the provision will last for (a)30 days (b)965days (c)120 days (d)40 days

∵ 100 persons had food provision for 24 days ∴ 1 person had food provision for 24×100 i.e. 2400 days. If 20 persons left the place, then remaining persons =(100 -20)=80 ∴ 80 persons had food provision for240080 i.e. 30 days. Hence, option (a) is correct.

Question 12

100 perons had food provision for 24 days. If 20 persons left the place, the provision will last for
(a)30 days
$(b) \frac{96}{5} d a y s$
(c)120 days
(d)40 days

$∵$ 100 persons had food provision for 24 days
$∴$ 1 person had food provision for $24 \times 100$ i.e. 2400 days.
If 20 persons left the place, then remaining persons =(100 -20)=80
$∴$ 80 persons had food provision for $\frac{2400}{80}$ i.e. 30 days.
Hence, option (a) is correct.