Question

4. In a city all the houses are either
three or four-storeyed. The ratio
of the number of three-storeyed
buildings to four-storeyed buildings is
5:3. If the total number of buildings
is 488, find the number of four-
storeyed buildings.​

Answer 1

Answer:

5x+3x =488

8x=488

x=488/8

x=61

61×5 =305 ;61×3=183

=305+183

=488

Answer 2

Answer:

Step-by-step explanation:

Let the ratio be 5x and 3x.

So, 5x+3x=488

8x=488

X=488/8

X=61

No. of 4 storey buildings =3x=3×61=183