Question

A car covers 56 km in an hour. How much distance will it cover in 90/7 hours if the same speed is maintained ?​

Answer 1

Answer:

Co Prime Numbers: Two numbers are said to be co-prime numbers only if their common divisor is 1 or highest common factor(HCF) is 1.

⇒ Prime Numbers : Prime number is a natural number which is only divisible by itself and it cannot be made by multiplying any other numbers.

⇒ If two numbers are co-prime that is not necessary that one of them must be a prime number.

For example, 4 and 9 are co-prime numbers but none of them are prime numbers.

∴ The given statement is false.

Answer 2

Distance covered by car 180 km in 5 hours

• Distance covered in 1 hour = $\frac{180}{5}=36km$

• Distance covered in 3 hours = 3 x 36 = 108 km

• To cover a distance of 180 km , time taken = 5 hours

• To cover a distance of 1 km , time taken = $\frac{5}{180}$

• To cover a distance of 54 km, time taken = $\frac{5}{180}\times54=1.5 \: hours$