Mansoon and shreya are playing a see saw. Mansoon is sitting 80cm away from the fulcrum and shreya is sitting 60 cm away from the fulcrum .calculate the effort that mansoon should apply to lift shreya if the weight of shreya is 420N.​

The water company charges a residential customer $41 for the first 3,000 gallons of water used and $1 for every 200 gallons used over 3000 gallons. if the water bill was $58 how many gallons of water were usedanswersa 3400 gallonsb 6000 gallonsc 6400 gallons d 7000 gallons