53.3k views
4 votes
If D varies directly with t and D is 105 when t is 3 find D when t is 8

User Leor
by
8.0k points

1 Answer

4 votes

If D varies directly with t and D is 105 when t is 3 then value of D when t is 8 is equal to 280

Solution:

In this sum we have been given that there is a direct relationship between d and t.

If d is 105 when t is 3 so now, we need to find d when t is 8.

To do this we can simply use the unitary method. The definition of unitary method is, the unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

Now, according to the definition we need to find the value of d when t is 1.

This can be done as follows:


D=(105)/(3)=35

Therefore, the value of d when t = 1 is 35.

Now, if the value of t=8 then d becomes:


D=35 * 8=280

Hence, when t=8 the value of d is 280.

User IT Ninja
by
7.8k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories