Question

Q-1. The cost of 4 m of a certain cloth is Rs. 228
a. Find the cost of 15 m of the same cloth
b. How many metres of this can be bought for Rs. 627

Q-2. The length and breadth of a rectangle are in ratio 5:4. If its breadth is 80cm find the length.

Q-3. Find x of x, 36 and 27 are in continued proportion.

PLEASE ANSWER MY QUESTION :):):):):):)

Answer 1

1. Given Cost of 4m cloth = Rs 228

Now, cost of 1 m cloth = 228/4 = Rs 57

a ) Cost of 15 m of the cloth = 15 × 57

= Rs 855

$Let \: x \:m \: of \:cloth \: bought \:at \:Rs \:627$

$x = \frac{627}{cost \:of \:1\:m \:cloth }\\= \frac{627}{57} \\= 11\:m$

$Let \: l \:and \: b \:are \: length \:and \: breadth \\of \: a \: rectangle$

$l : m = 5 : 4 \: (given)$

$Let \: l = 5x , \:and \: b = 4x$

$b = 80 \:cm \:(given)$

$\implies 4x = 80$

$\implies x = \frac{80}{4} = 20$

$Now, \: l = 5x = 5 \times 20 = 100 \:cm$

$3 ) x , 36 \:and \: 27 \: are \: in \: continued \\proportion$

$\pink { If \: a,b\:c \:are \:in \: continued }\\\pink {proportion \:then \:b^{2} = ac }$

$\implies 36^{2} = x \times 27$

$\implies x = \frac{ 36 \times 36 }{27} \\= 48$

•••♪

Answer 2

Answer:

The answer will be 48 metre......