if a 36 cm thread is used to wrap a book , lengthwise
twice and breadthwise once, what is the size of the book?

Answer Posted / sharif m

length of the book = x
width of a book = y

4x + 2y = 36
(one wrap covers both side length of the book same in width
also - so two wrap covers 4x as well as in 2y)

4(6)+ 2(6)=36
4(7)+2(4) =36
4(8)+2(2)=36

are the possible roots.... second shud be the answer
because that parameters are ideal for a book.

7 x 4 is the size of book

Is This Answer Correct ?    6 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

in 8*8 chess board what is the total number of squares refer odel

909


A and b can do a piece of work in 15 and 10 days. A and b work on it for sometime and then a leaves b completes the job in 5 days. For how long did a work.

802


What is degree of a Relation?

718


Find the hypotenuse of a right angle isoceles triangle whose area is 50.

704


There are 9 coins. One of 9 is less weighted and others have equal weighed. Find the minimum no of balances to find the defective coin?

810






Girish invested a certain amount at the rate of 8% p.a. for 6 year to obtain an amount of Rs. 28046.How much amount did Girish obtain as simple interest?

925


There six red shoes & 4 green shoes .If two of the shoes are drawn.What is the probability of getting two red shoes.

803


Find sqrt of 113 up to 3 decimal places.

750


the difference b/w the compound interest payble half yearly and the simple interest on a certain sum cont out at 10% p.a for 1 year is Rs 25 what is the sum

905


complete the series: x y z u v w r s t __

1350


Complete the series..2 2 12 12 30 30 ?

761


Given 10 alphabets out of which 5 are to be chosen. How many words can be made with atleast one repetition.

740


in the year 1990 there are 5000 men 3000 women 2000 boys .in 1994 men are increased by 20% women are increased by ratio of boys and women

800


Concentrations of three wines A, B and C are 10, 20 and 30 percent respectively. They are mixed in the ratio 2 : 3 : x resulting in a 23% concentration solution. Find x.

1410


A simple interest amount of Rs 6000 for 6 months is Rs 600. Calculate the annual rate of interest.

671