10 second questions

Jai Ganesh · 2014-07-09 00:17:17

Hi bobbym,

The solutions #5125 and #5126 are correct. Exemplary!

#5127. 'A' took 15 seconds to cross a rectangular field diagonally walking at the rate of 52 meters per minute and 'B' took the same time to cross the same field along its sides walking at the rate of 68 meters per minute. Find the area of the field.

#5128. A rectangular carpet has an area of 60 square meters. If its diagonal and longer side together equal 5 times the shorter side, find the length of the carpet.

bobbym · 2014-07-09 05:50:20

Hi;

Jai Ganesh · 2014-07-09 10:05:14

Hi bobbym,

The solution #5128 is correct. Neat work, bobbym!

#5129. A rectangle had width 'a' and length 'b'. If the width is decreased by 20% and the length is increased by 10%, then what is the area of the new rectangle in percentage compared to 'ab'?

#5130. If the length and breadth of a rectangular plot is increased by 50% and 20% respectively, then how many times will its area be increased?

ElainaVW · 2014-07-09 19:36:42

Hello:

Jai Ganesh · 2014-07-09 22:15:44

Hi ElainaVW,

Thanks a lot.

bobbym : Get well soon!

bobbym · 2014-07-09 22:34:24

She made it sound like I was a goner. I was just a little bit tired.

Jai Ganesh · 2014-07-09 23:23:38

Hi bobbym,

The solution #5129 is perfect.

The solution 5130 : New area = (9/5 x length x breadth).
Increase = 4/5 times.

The solution #5130 is correct too.

Marvelous, bobbym! (#5129 and #5130).

#5131. A towel, when bleached, was found to have lost 20% of its length and 10% of its breadth. Find the percentage of decrease in area.

#5132. The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area?

bobbym · 2014-07-10 00:43:16

Hi;

Maburo · 2014-07-10 01:26:11

Jai Ganesh · 2014-07-10 03:40:30

Hi bobbym and Maburo,

The solutions #5131 and #5132 are correct. Exemplary, bobbym and Maburo!

#5133. The length of a rectangle is is increased by 60%. By what percent would the width have to be decreased so as to maintain the same area?

#5234. The length of a rectangle is decreased by r%, and the breadth is increased by (r + 5)%. Find r, if the area of the rectangle is unaltered.

Maburo · 2014-07-10 03:48:46

bobbym · 2014-07-10 04:03:05

Hi;

Jai Ganesh · 2014-07-11 00:44:04

Hi Maburo and bobbym,

The solutions #5133 and #5134 are correct. Remarkable, Maburo and bobbym!

#5135. If the area of a rectangular plot increases by 30% while its breadth remains same, what will be the ratio of the areas of new and old figures?

#5136. What will be the cost of gardening 1 meter broad boundary around a rectangular plot having perimeter of 340 meters at the rate of $10 per square meter?

bobbym · 2014-07-11 02:00:51

Hi ganesh;

Maburo · 2014-07-11 02:19:06

Jai Ganesh · 2014-07-11 12:08:10

Hi bobbym and Maburo,

The solution #5136 is correct, bobbym! Good work!

The solutions #5135 and #5136 are correct, Maburo! Marvelous!

#5137. A room is 15 feet long and 12 feet broad. A mat has to be placed on the floor of this room leaving 18 inches space from the walls. What will be the cost of the mat at the rate of $3.50 per square feet?

#5138. 2 meters broad pathway is to be constructed around a rectangular plot on the inside. The area of the plot is 96 square meters. The rate of construction is $50 per square meter. Find the total cost of the construction.

Maburo · 2014-07-11 13:29:07

Jai Ganesh · 2014-07-11 19:48:39

Hi Maburo,

The Solution #5137 is correct. Remarkable, Maburo!

The solution #5138, as you pointed out, is arbitrary. I shall wait for bobbym's solution #5137.

bobbym, please ignore problem #5138. Please answer #5137 alone.

bobbym · 2014-07-11 20:18:53

Hi;

Jai Ganesh · 2014-07-11 23:26:01

Hi Maburo and bobbym,

The solution #5137 is correct. Marvelous, Maburo and bobbym!

#5139. Within a rectangular garden 10 meters wide and 20 meters long, we wish to pave a walk around the borders of uniform width so as to leave an area of 96 square meters for flowers. How wide should the walk be?

#5140. A rectangular lawn 55 meters by 35 meters has two roads each 4 meters wide running in the middle of it, one parallel to length and the other parallel to breadth. Find the cost of gravelling the roads at 75 cents per square meter.

bobbym · 2014-07-12 00:36:19

Hi;

Jai Ganesh · 2014-07-13 00:12:32

Hi bobbym,

The solutions #5139 and #5140 are correct. Excellent!

#5141. A rectangular park 60 meters long and 40 meters wide has two concrete crossroads running in the middle of he park and the rest of the park has been used as a lawn. If the area of the lawn is 2109 square meters, then what is the width of the road?

#5142. A housing society has been allotted a square piee of land measuring 2550.25 square meters. What is the side of the plot?

bobbym · 2014-07-13 01:16:14

Hi;

Maburo · 2014-07-13 01:56:41

Jai Ganesh · 2014-07-14 00:13:45

Hi bobbym and Maburo,

The solutions #5141 and #5142 are correct. Excellent, bobbym and Maburo!

#5143. The cost of cultivating a square field at the rate of $135 per hectare is $1215. What would be the cost of putting a fence around it at the rate of 75 cents per meter?

#5144. The perimeters of five squares are 24 centimeters, 32 centimeters, 40 centimeters, 76 centimeters, and 80 centimeters respectively. Find the perimeter of another square equal in area to the sum of the areas of these squares.

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