Question

Rahul has 260 coin of 1,2, and 5 total value of money is 309rs the no. Of ₹2 is three times the number 5 find all coins

Answer 1

Answer:

Given: Coordinates of Point A(1,3),B(−1,0) and C(4,0)

Construction: Drop a perpendicular from A on x− axis, which meets x-axis at D≡(1,0)

Now in ΔADC,AD=3,DC=3

Area of ΔADC=21×DC×AD

=21×3×3=29 cm2

Now in ΔADB,AD=3,DB=2

Area of ΔADB=21×DB×AD

=21×2×3=3 cm2

Area of ΔABC= Ara of ΔADC+ Area of ΔABD

=29+3=215=7.5 cm2

Answer 2

Step-by-step explanation:

1 ruppe coin is x

2 ruppe coin is x

5 ruppe coin is x+3

so,

x+x+x+3=309

3x+3=309

3x=309-3

3x=306

x =306/3

x=102