Search found 6 matches
PQ = sqrt (4^2+3^2)=5
Similarly, PR = sqrt (7^2+ 1^2) = sqrt(50)=5sqrt(2)
QR=5
which gives us an isosceles triangle,
Area = (1/2) * base * height
=> (1/2) * 5 * 5= 12.5
- by Vipul1991
Sun Aug 13, 2017 9:40 am- Forum: Problem Solving
- Topic: Coordinate Plane - triangle
- Replies: 9
- Views: 6439
1/b=b/c=c/8
Therefore, from eqn (1)
1/b=b/c => b^2=c
And from eqn (2)
b/c=c/8 => c^2=8b
from (1) & (2) we have,
Replacing c in terms of b,
b^4=8b
=> b^3=8 ; b=2
Replacing b=2 in eqn (1) we have c=4
Hence b+c=6
- by Vipul1991
Sat Aug 12, 2017 10:26 pm- Forum: Problem Solving
- Topic: Problem Solving
- Replies: 6
- Views: 4080
Rounding off Q Solution
10.0000-1.4ab5= 8.5(9-a)(9-b)5 Our number is 8.5(9-a)(9-b)5 1) we know 10-x = 8.56 then the no can be 8.5615 & 8.5565 and still yield on rounding to nearest hundredth digit 8.56 hence Unsufficient 2) 10-x = 8.564 9-a = 6 In 8.5(9-a)(9-b)5, When we round it to nearest thousandth 9-b must become (...
- by Vipul1991
Sat Aug 12, 2017 11:53 am- Forum: Data Sufficiency
- Topic: 1.4ab5
- Replies: 6
- Views: 4964
Concentrate\Water are in ratio 1:3
12 ounces of orange cans for 200 6 ounce orange juice
Hence 2 - 6 ounces concentrate from 1 - 12 ounce can of concentrate, we need to worry about 100 cans now.
1*x + 3*x=100
4*x=100
x=25
- by Vipul1991
Sat Aug 12, 2017 10:46 am- Forum: Problem Solving
- Topic: Cans of OJ concentrate
- Replies: 11
- Views: 8293
100 -----> (40% discount) 100 X 0.6=60
20% profit on marked price:
Let MP be x
x * 1.2=60
=> x = 50
MP = 50
SP = 100
Since 50 + 50 = 100
Hence it is a 100% increase
- by Vipul1991
Sat Aug 12, 2017 9:42 am- Forum: Problem Solving
- Topic: Sweater price
- Replies: 9
- Views: 7868
Solution to % increase problem
100 ---> (10%) 100 X 0.1=110
110 ---> (20 %) 110 X 0.2=132
132-100= 32$ increase
(Change/Original)*100 = (32/132)*100= 24%
(B)
- by Vipul1991
Sat Aug 12, 2017 9:38 am- Forum: Problem Solving
- Topic: % increase
- Replies: 7
- Views: 6554