5 years. Find Ravi's present age
Answer:
15 years old
Step-by-step explanation:
Given the ratio of their ages = 4 : 3 = 4x : 3x ( x is a multiplier )
Then in 5 years the ratio of their ages is 4x + 5 : 3x + 5 = 5 : 4, that is
= ( cross- multiply )
4(4x + 5) = 5(3x + 5) ← distribute both sides
16x + 20 = 15x + 25 ( subtract 15x from both sides )
x + 20 = 25 ( subtract 20 from both sides )
x = 5
Thus
Ravi's age is 3x = 3 × 5 = 15
Answer:
Step-by-step explanation:
Ravi présent âge 15 because présent would be 20:15 and then it would turn into 25:20
Answer: it 1
like pls
Step-by-step explanation:
Answer:
The treasure is 0.8 inches from the south edge on Ali's map.
Step-by-step explanation:
Scaling factor, f = (Original length)/(Scalet length)...(i)
Let and be the scaling factors used by Ali and Kiana respectively.
Given that the field is 400 feet= 400x12 inches wide and Ali made an 8-inch-wide map to record its location.
So, ...(ii)
Kiana made her map using a scale of 1-inch to 20 feet=20x12 inches.
So, ...(iii)
As on Kiana's map, the treasure is 2 inches from the south edge of the field,
so, from equations (i), and (ii), the original length of the treasure for the south edge of the field
=2x240
=480 inches
Now, again from the equation (i) and (ii), the scaled length of the treasure on Ali's map
= 480/f_1
=480/600
=0.8 inches
Hence, the treasure is 0.8 inches from the south edge on Ali's map.