A and B are together 90 years old. Five years ago, A was thrice as old as B was. Hence, the ages of A and B five years back would be (x – 5) years and (85 – x) years, respectively.
True
Let the age of A be x yr.
Then, age of S = (90 – x) yr
Five years ago, the age of A = (x- 5) yr
The age of B= 90-x-5 = (85-x)yr
Hence, the ages of A and 8 five years back would be (x – 5) yr and (85 – x) yr, respectively.
When 9 is subtracted from the product of p and 4, the result is 11. The value of p is—-.
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The share of A when Rs 25 are divided between A and B, so that A gets Rs 8 more than B, is——–.
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(a) transposition (b) distributivity
(c) commutativity (d) associativity .
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In questions 16 to 32, fill in the blanks to make each statement true.
Question. 16 In a linear equation, the——— power of the variable appearing in the equation is one.
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is————.
-4 =
, then the numerical value of 2x – 7 is
(b)
y = –
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+ 30 = 18 has the solution as——–.
x-2=5-
x,then x=——-.
