Question

If 90% of X is 315 km then the value of X is :
(a) 325 km
(b) 550 km
(c) 450 km
(d) 340 km

Answer 1

Step-by-step explanation:

90% of x =315

$\frac{90}{100} x = 315 \\ x = 315 \times \frac{100}{90} \\ x = 350$

LIKE AND FOLLOW

Answer 2

Answer:

350 km is the answer

Step-by-step explanation:

$\sf \: we \: have \: 90\% \: of \: x \: = 315$

$\implies \sf \: \: \frac{90}{100} \times x = 315$

$\implies \sf \: \: \: \: \: \: x \: = \frac{315 \times 100}{90} = \frac{315 \times 10}{9} = 350$

$\sf \implies \: x = 350 \: \: km$

The value of x is 350 km