Question

Exercise 10.1
a varies directly with b. The value of a is 20 when b = 2.5. Find the value of a when b = 4.​

Answer 1

Answer:32

Step-by-step explanation:

Answer 2

Step-by-step explanation:

a into b equal b into a

because a varies directly with b soe equal a equal 20 and be equal 2 decimal 5 so we will write a upon b equal 20 upon 2 decimal 5 equal we will We will given that b equal 4 it is a direct variation so we will cross multiply so we will write 20 into 4 equal 2 decimal 5 into x equal 32

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