The least whole number which when subtracted from both the
terms of the ratio 6:7 to give a ratio less than 16:21, is
a) 3
b) 4
c) 5
d) 6
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The least whole number which when subtracted from both the
terms of the ratio 6:7 to give a ratio less than 16:21, is
a) 3
b) 4
c) 5
d) 6
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Answer:
a) 3
Step-by-step explanation:
Let the whole number is X.
Now, according to question,
(6 -X) /(7 -X) < 16/21.
21 ×(6 -X) < 16 ×(7 -X)
126 - 21X < 112 - 16X
126 - 112 < - 16X + 21X
14 < 5X
5X > 14
So, Least such whol number would be 3.
X > 2.8