Please answer this question is of maths please.... Please.....
Answers
Answer:
1.Cost of 12 books = = Rs. 56
2.Let x be the number of copies that would occupy a self-length of 5.1m.
Number of copies 136 x Length the self ( in m ) 3.4 5.1 Since, the number of copies and the length of the shelf are in direct variation.
∴ 136/x=3.4/5.1
⇒ 136×5.1=x ×3.4
⇒ x=3.4/136×5.1
⇒ x=204
∴ 204 copies will occupy a shelf of length 5.1m.
3.The height of the tree = 9.5 m
The shadow of the tree = 8 m
According to the given condition in the question, the lengths of the shadow are in direct proportion.
=8/9.5=24/x
=24×9.5/8
=45.6
4.After 10 days : 150 men had food for 35 days.
Suppose 125 men had food for x days.
Now, Less men, More days (Indirect Proportion)
∴125:150::35:x
⇒122×x=150×35
⇒x=150×35/125⇒x=42
5.Solution
If number of men are increased, the number of days the particular amount of rice will last will decrease.Therefore we can say that number of men and number of days rice will last are in inverse proportion.
Therefore,
24×18=8×x
= x=20×14/8
x=5×7
=35
Therefore, we can say that the food will last upto 35 days for the consumption of 8 men
Answer:
555,33300-44444
(55344)+(6644)
equals 900000