If 90% of x is 315 km, then the value of x is
(a) 325 km
(b) 350 km
(c) 350 m
(d) 325 m

Solution:

As per the problem statement

90 percent of x = 315

(90/100) × (x) = 315

Therefore,

x = 315 × (100/90)

= (315/9) × 10

= 35 × 10

= 350 Km

✦ Try this: If 80% of x is 320 km, then the value of x is

80% of x = 320

(80/100) × (x) = 320

Therefore,

x = 320 × (100/80)

= (320/8) × 10

= 40 × 10

= 400 Km

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 8

NCERT Exemplar Class 8 Maths Chapter 9 Problem 5

If 90% of x is 315 km, then the value of x is (a) 325 km, (b) 350 km, (c) 350 m, (d) 325 m

Summary:

If 90% of x is 315 km, then the value of x is 350 Km

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