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RS Aggarwal Solutions Class 7 Mathematics Solutions for Percentage Exercise 10C in Chapter 10 - Percentage
Prev
A number decreased by 8% gives 69. The number is
(a) 80 (b) 75 (c) 85 (d) None of these
Answer:
Solution:-
(b) 75
Because,
Let the required number be x
Now,
= x - 8% of x = 69
= [x - {(8/100) × x}] = 69
= [x - {8x/100}] = 69
= [x - {2x/25}] = 69
= [(25x - 2x)/25] = 69
= [23x/25] = 69
= x = (69 × 25)/23
= x = (75)
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