Question

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​

Answer 1

Answer:

your ans in top ok byby

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

X > 2.8

So, Least such whol number would be 3.

Answer 2

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