Ques:- The cost of 17 apples, 9 oranges , 13 bananas is rs 130 , whereas cost of 13 oranges, 7 apples and 10 bananas is rs 100. find the cost of 1 apple , 1 banana and 1 orange put together?
Recent Answer : Added by Admin On 2022-09-27 18:08:58:
Let cost for apple be a Cost for banana be b and Orange be c
So by first value expression becomes 17a + 13b + 9c =130 ———-1 therefore if you further solve a = (130 – 13b – 9c)/17 ———- 2 the second expression becomes: 13c + 7a + 10b = 100 ———- 3 If you put value of a in second expression it becomes: 13c + 7[(130 – 3b – 9c)/17] +10b = 100
Further if you solve you get value of b:
b = 10 – 2c ———-4
put value of b from 4 in 1
17a + 13 [10 – 2c] + 9c = 130
Further if you solve you find value of a
a = c ———-5
Put 5 in 3
13c + 7c + 10b = 100
further solve you get: c = 1 ———-6
from 5 and 6
a = c = 1 ———-7
Substitute value of c in expression 4
b = 10 – 2c b = 10 -2 * 1 b = 8 ———-8
therefore a + b + c = 10
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Recent Answer : Added by Admin On 2020-05-17 12:01:12:
A parabola is obtained as the intersection of a cone with a
plane
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Ques:- A certain number of men can finish a piece of work in 10 days. If however there were 10 men less it will take 10 days more for the work to be finished. How many men were there originally?
Recent Answer : Added by Admin On 2022-09-28 18:22:01:
This is Expert Verified Answer
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Lipimishra2
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Let the no. of men (originally) be x.
x no. of men require 10 days.
if however there were 10 men less it will take 10 days more for the work to be finished. ——> means x-10 men require 10+10=20 days.
10x = 20 (x-10)
x = 2x -20 => x = 20.
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Ques:- The areas of the two spheres are in the ratio 1: 4. What is the ratio of their volume ?
Recent Answer : Added by BINDHU REDDY On 2021-08-09 01:51:51:
1/8
Ques:- The premium fashion brand Morgan De Toi, recentlylaunched in India, belongs to which country?
A. Japan
B. Italy
C. USA
D. France
Recent Answer : Added by Hariharan On 2022-08-14 16:33:48:
France — D
Ques:- From the sum of 17 and -12, subtract 48
A. -17
B. -20
C. -43
D. -48
Recent Answer : Added by mohit On 2022-09-02 17:02:42:
17and+-12=5-48=-43
Ques:- A man purchased 3 blankets @ Rs.100 each, 5 blankets @ Rs.150 each and two blankets at a certain rate which is now slipped off from his memory. But he remembers that the average price of the blankets was Rs.150. Find the unknown rate of two blankets?
Recent Answer : Added by DK BOSS On 2021-07-15 08:16:54:
Answer: 450
Explanation:
10 * 150 = 1500
3 * 100 + 5 * 150 = 1050
1500 – 1050 = 450
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Recent Answer : Added by BISHWAS KUMAR On 2022-01-16 17:18:18:
20- buy 15 books
15- buy 20 books
Original price is 20.
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Ques:- The average salary of 3 workers is 95 Rs. per week. If one earns Rs.115 and second earns Rs.65 how much is the salary of the 3rd worker.
Recent Answer : Added by Admin On 2020-05-17 12:01:34:
(115+65+x)/3=95
x=105
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Recent Answer : Added by MyDotcollection On 2022-03-09 16:42:06:
8days
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Recent Answer : Added by Admin On 2020-05-17 12:03:17:
( C ) 6
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Ques:- Number Series 7,16,9,15,11,14,?
Recent Answer : Added by Admin On 2020-05-17 12:01:30:
First nos series is 7,9,11,?
ie odd number siries ie 7,9,11,13
Second number series is 16,15,14
ie 1 less the previous number 16,15,14,13
Ans —-series is 7,16,9,15,11,14,13,13
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Let cost for apple be a Cost for banana be b and Orange be c
So by first value expression becomes 17a + 13b + 9c =130 ———-1 therefore if you further solve a = (130 – 13b – 9c)/17 ———- 2 the second expression becomes: 13c + 7a + 10b = 100 ———- 3 If you put value of a in second expression it becomes: 13c + 7[(130 – 3b – 9c)/17] +10b = 100
Further if you solve you get value of b:
b = 10 – 2c ———-4
put value of b from 4 in 1
17a + 13 [10 – 2c] + 9c = 130
Further if you solve you find value of a
a = c ———-5
Put 5 in 3
13c + 7c + 10b = 100
further solve you get: c = 1 ———-6
from 5 and 6
a = c = 1 ———-7
Substitute value of c in expression 4
b = 10 – 2c b = 10 -2 * 1 b = 8 ———-8
therefore a + b + c = 10