Q3.Mother wants to divide ₹56 among her daughters Parul
and Priyam in the ratio of their ages. If Parul is 9 years
old and Priyam is 15 years old, find the amount each
one of these get.
Answers
Answered by
3
Answer:
Correct option is
A
1
Let Δ=
∣
∣
∣
∣
∣
∣
∣
∣
l
1
l
2
l
3
m
1
m
2
m
3
n
1
n
2
n
3
∣
∣
∣
∣
∣
∣
∣
∣
Δ
2
=
∣
∣
∣
∣
∣
∣
∣
∣
l
1
l
2
l
3
m
1
m
2
m
3
n
1
n
2
n
3
∣
∣
∣
∣
∣
∣
∣
∣
×
∣
∣
∣
∣
∣
∣
∣
∣
l
1
l
2
l
3
m
1
m
2
m
3
n
1
n
2
n
3
∣
∣
∣
∣
∣
∣
∣
∣
Multiplying row by row
=
∣
∣
∣
∣
∣
∣
∣
∣
l
1
2
+m
1
2
+n
1
2
l
1
l
2
+m
1
m
2
+n
1
n
2
l
1
l
3
+m
1
m
3
+n
1
n
3
l
1
l
2
+m
1
m
2
+n
1
n
2
l
1
2
+m
2
2
+n
2
2
l
2
l
3
+m
2
m
3
+n
2
n
3
l
1
l
3
+m
1
m
3
+n
1
n
3
l
2
l
3
+m
2
m
3
+n
2
n
3
l
3
2
+m
3
2
+n
3
2
∣
∣
∣
∣
∣
∣
∣
∣
=
∣
∣
∣
∣
∣
∣
∣
∣
1
0
0
0
1
0
0
0
1
∣
∣
∣
∣
∣
∣
∣
∣
using given conditions.
⇒Δ
2
=1
∴Δ=±1
∴k=1
Answered by
4
Answer
Parul's age=9 years
priyam's age= 15 years old
Ratio=parul's age
________________
priyam's age
9÷3
_________
15÷3
= 3 & 5
Therefore,the answer is 3:5
hope it helps...
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