Question

john paid $9.25 for a number of packets of instant noodles costing $1.85 for 5. How many packets of noodles did john buy? If he were to buy 40 packets of the same noodles, would $15 be enough to pay for them?

Answer 1

Every 5 packets cost $1.85

John can afford 9.25 : 1.85 = 5 (times)

So, John bought 5 x 5 = 25 packets of noodles.

If he were to buy 40 packets, he would've had to pay 40 : 25 = 1.6 times more money.

So, he would've had to pay : 9.25 x 1.6 = 14.8 (dollars)

Since 14.8 < 15, $15 would be enough to pay for 40 packets of instant noodles.