one number is 7 times a first number. A third number is 100 more than the first number. If the sum of the three numbers is 901, find the numbers. please help!

step-by-step explanation:

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

happy to

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just get this app called photo math it should be able to do those

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x