Distance, Rate, and Cost Problems

The video tutorial covers various mathematical problems, including basic arithmetic, distance and speed calculations, weight and cost calculations, and workforce determination. Each problem is explained step-by-step, providing viewers with a clear understanding of how to approach and solve similar problems.

If a child has 50 rupiah and gives away 15 rupiah, how much money is left?

• 35 rupiah

• 40 rupiah

• 25 rupiah

• 30 rupiah

A train travels at 40 km/h for 7 hours. How far does it travel?

• 280 km

• 300 km

• 260 km

• 320 km

If 15 crates of fruit weigh 250 kg and each empty crate weighs 3 kg, what is the weight of the fruit?

• 205 kg

• 215 kg

• 200 kg

• 210 kg

How many days will the grass last for 21 horses if it lasts 78 days for 7 horses?

• 26 days

• 24 days

• 28 days

• 30 days

If 3 chocolate bars cost 5 rupiah, how many bars can be bought for 50 rupiah?

• 30 bars

• 25 bars

• 35 bars

• 40 bars

A person walks 1.75 meters in a quarter of a second. How far can they walk in 10 seconds?

• 80 meters

• 70 meters

• 75 meters

• 65 meters

If a stone is 15 meters south of a tree and the tree is 30 meters south of a house, what is the distance between the stone and the house?

• 35 meters

• 40 meters

• 45 meters

• 50 meters

If 4.5 meters of fabric costs 90 rupiah, what is the cost of 2.5 meters?

• 55 rupiah

• 45 rupiah

• 50 rupiah

• 60 rupiah

How many people are needed to complete a task in half a day if 7 people can complete it in 6 days?

• 88 people

• 90 people

• 80 people

• 84 people

If a wire expands from 40 meters to 52 meters when heated, what will be its length if it originally measures 72 meters?

• 93.6 meters

• 92 meters

• 95 meters

• 90 meters