# 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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